Home / 42,485.76-63,727.56-11,320.92

Finding the Fourth Proportional to 42,485.76, 63,727.56 and 11,320.92

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Solution

The fourth proportional to 42,485.76, 63,727.56 and 11,320.92 is: 16,981.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,485.76 : 63,727.56 = 11,320.92 : x
  2. Step 2: Convert to fraction form
    42,485.76/63,727.56 = 11,320.92/x
  3. Step 3: Cross multiply
    42,485.76x = 63,727.56 × 11,320.92
  4. Step 4: Simplify right side
    42,485.76x = 721,454,608.56
  5. Step 5: Solve for x
    x = 721,454,608.56/42,485.76
  6. Step 6: Final answer
    x = 16,981.09

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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.