Home / 28,472.10-42,708.15-7,695.60

Finding the Fourth Proportional to 28,472.10, 42,708.15 and 7,695.60

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Solution

The fourth proportional to 28,472.10, 42,708.15 and 7,695.60 is: 11,543.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,472.10 : 42,708.15 = 7,695.60 : x
  2. Step 2: Convert to fraction form
    28,472.10/42,708.15 = 7,695.60/x
  3. Step 3: Cross multiply
    28,472.10x = 42,708.15 × 7,695.60
  4. Step 4: Simplify right side
    28,472.10x = 328,664,839.14
  5. Step 5: Solve for x
    x = 328,664,839.14/28,472.10
  6. Step 6: Final answer
    x = 11,543.40

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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.