Home / 28,540.50-39,385.89-15,967.68

Finding the Fourth Proportional to 28,540.50, 39,385.89 and 15,967.68

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Solution

The fourth proportional to 28,540.50, 39,385.89 and 15,967.68 is: 22,035.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,540.50 : 39,385.89 = 15,967.68 : x
  2. Step 2: Convert to fraction form
    28,540.50/39,385.89 = 15,967.68/x
  3. Step 3: Cross multiply
    28,540.50x = 39,385.89 × 15,967.68
  4. Step 4: Simplify right side
    28,540.50x = 628,901,288.04
  5. Step 5: Solve for x
    x = 628,901,288.04/28,540.50
  6. Step 6: Final answer
    x = 22,035.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.