Home / 28,665.66-42,991.20-11,125.92

Finding the Fourth Proportional to 28,665.66, 42,991.20 and 11,125.92

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Solution

The fourth proportional to 28,665.66, 42,991.20 and 11,125.92 is: 16,686.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,665.66 : 42,991.20 = 11,125.92 : x
  2. Step 2: Convert to fraction form
    28,665.66/42,991.20 = 11,125.92/x
  3. Step 3: Cross multiply
    28,665.66x = 42,991.20 × 11,125.92
  4. Step 4: Simplify right side
    28,665.66x = 478,316,651.90
  5. Step 5: Solve for x
    x = 478,316,651.90/28,665.66
  6. Step 6: Final answer
    x = 16,686.05

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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.