Home / 28,502.28-42,730.36-11,874.78

Finding the Fourth Proportional to 28,502.28, 42,730.36 and 11,874.78

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Solution

The fourth proportional to 28,502.28, 42,730.36 and 11,874.78 is: 17,802.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,502.28 : 42,730.36 = 11,874.78 : x
  2. Step 2: Convert to fraction form
    28,502.28/42,730.36 = 11,874.78/x
  3. Step 3: Cross multiply
    28,502.28x = 42,730.36 × 11,874.78
  4. Step 4: Simplify right side
    28,502.28x = 507,413,624.32
  5. Step 5: Solve for x
    x = 507,413,624.32/28,502.28
  6. Step 6: Final answer
    x = 17,802.56

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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.