Home / 28,678.31-43,001.07-11,127.65

Finding the Fourth Proportional to 28,678.31, 43,001.07 and 11,127.65

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Solution

The fourth proportional to 28,678.31, 43,001.07 and 11,127.65 is: 16,685.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,678.31 : 43,001.07 = 11,127.65 : x
  2. Step 2: Convert to fraction form
    28,678.31/43,001.07 = 11,127.65/x
  3. Step 3: Cross multiply
    28,678.31x = 43,001.07 × 11,127.65
  4. Step 4: Simplify right side
    28,678.31x = 478,500,856.59
  5. Step 5: Solve for x
    x = 478,500,856.59/28,678.31
  6. Step 6: Final answer
    x = 16,685.11

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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.