Home / 28,502.28-42,755.04-12,921.12

Finding the Fourth Proportional to 28,502.28, 42,755.04 and 12,921.12

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Solution

The fourth proportional to 28,502.28, 42,755.04 and 12,921.12 is: 19,382.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,502.28 : 42,755.04 = 12,921.12 : x
  2. Step 2: Convert to fraction form
    28,502.28/42,755.04 = 12,921.12/x
  3. Step 3: Cross multiply
    28,502.28x = 42,755.04 × 12,921.12
  4. Step 4: Simplify right side
    28,502.28x = 552,443,002.44
  5. Step 5: Solve for x
    x = 552,443,002.44/28,502.28
  6. Step 6: Final answer
    x = 19,382.41

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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.