Home / 28,663.25-42,983.96-11,129.00

Finding the Fourth Proportional to 28,663.25, 42,983.96 and 11,129.00

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Solution

The fourth proportional to 28,663.25, 42,983.96 and 11,129.00 is: 16,689.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,663.25 : 42,983.96 = 11,129.00 : x
  2. Step 2: Convert to fraction form
    28,663.25/42,983.96 = 11,129.00/x
  3. Step 3: Cross multiply
    28,663.25x = 42,983.96 × 11,129.00
  4. Step 4: Simplify right side
    28,663.25x = 478,368,220.28
  5. Step 5: Solve for x
    x = 478,368,220.28/28,663.25
  6. Step 6: Final answer
    x = 16,689.26

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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.