Home / 31,129,113.70-46,693,670.55-13,213,209.70

Finding the Fourth Proportional to 31,129,113.70, 46,693,670.55 and 13,213,209.70

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Solution

The fourth proportional to 31,129,113.70, 46,693,670.55 and 13,213,209.70 is: 19,819,814.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,129,113.70 : 46,693,670.55 = 13,213,209.70 : x
  2. Step 2: Convert to fraction form
    31,129,113.70/46,693,670.55 = 13,213,209.70/x
  3. Step 3: Cross multiply
    31,129,113.70x = 46,693,670.55 × 13,213,209.70
  4. Step 4: Simplify right side
    31,129,113.70x = 616,973,260,639,864.25
  5. Step 5: Solve for x
    x = 616,973,260,639,864.25/31,129,113.70
  6. Step 6: Final answer
    x = 19,819,814.55

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.