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Finding the Fourth Proportional to 20,713.70, 31,070.55 and 14,881.70

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Solution

The fourth proportional to 20,713.70, 31,070.55 and 14,881.70 is: 22,322.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713.70 : 31,070.55 = 14,881.70 : x
  2. Step 2: Convert to fraction form
    20,713.70/31,070.55 = 14,881.70/x
  3. Step 3: Cross multiply
    20,713.70x = 31,070.55 × 14,881.70
  4. Step 4: Simplify right side
    20,713.70x = 462,382,603.94
  5. Step 5: Solve for x
    x = 462,382,603.94/20,713.70
  6. Step 6: Final answer
    x = 22,322.55

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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.