Home / 31,705.74-47,542.14-13,929.12

Finding the Fourth Proportional to 31,705.74, 47,542.14 and 13,929.12

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Solution

The fourth proportional to 31,705.74, 47,542.14 and 13,929.12 is: 20,886.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,705.74 : 47,542.14 = 13,929.12 : x
  2. Step 2: Convert to fraction form
    31,705.74/47,542.14 = 13,929.12/x
  3. Step 3: Cross multiply
    31,705.74x = 47,542.14 × 13,929.12
  4. Step 4: Simplify right side
    31,705.74x = 662,220,173.12
  5. Step 5: Solve for x
    x = 662,220,173.12/31,705.74
  6. Step 6: Final answer
    x = 20,886.44

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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.