Home / 31,355.82-47,036.16-13,587.66

Finding the Fourth Proportional to 31,355.82, 47,036.16 and 13,587.66

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Solution

The fourth proportional to 31,355.82, 47,036.16 and 13,587.66 is: 20,382.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,355.82 : 47,036.16 = 13,587.66 : x
  2. Step 2: Convert to fraction form
    31,355.82/47,036.16 = 13,587.66/x
  3. Step 3: Cross multiply
    31,355.82x = 47,036.16 × 13,587.66
  4. Step 4: Simplify right side
    31,355.82x = 639,111,349.79
  5. Step 5: Solve for x
    x = 639,111,349.79/31,355.82
  6. Step 6: Final answer
    x = 20,382.54

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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.