Home / 42,680.52-64,024.20-11,515.32

Finding the Fourth Proportional to 42,680.52, 64,024.20 and 11,515.32

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Solution

The fourth proportional to 42,680.52, 64,024.20 and 11,515.32 is: 17,273.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,680.52 : 64,024.20 = 11,515.32 : x
  2. Step 2: Convert to fraction form
    42,680.52/64,024.20 = 11,515.32/x
  3. Step 3: Cross multiply
    42,680.52x = 64,024.20 × 11,515.32
  4. Step 4: Simplify right side
    42,680.52x = 737,259,150.74
  5. Step 5: Solve for x
    x = 737,259,150.74/42,680.52
  6. Step 6: Final answer
    x = 17,273.90

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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.