Home / 39,688.20-59,532.30-21,025.80

Finding the Fourth Proportional to 39,688.20, 59,532.30 and 21,025.80

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Solution

The fourth proportional to 39,688.20, 59,532.30 and 21,025.80 is: 31,538.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,688.20 : 59,532.30 = 21,025.80 : x
  2. Step 2: Convert to fraction form
    39,688.20/59,532.30 = 21,025.80/x
  3. Step 3: Cross multiply
    39,688.20x = 59,532.30 × 21,025.80
  4. Step 4: Simplify right side
    39,688.20x = 1,251,714,233.34
  5. Step 5: Solve for x
    x = 1,251,714,233.34/39,688.20
  6. Step 6: Final answer
    x = 31,538.70

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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.