Home / 21,572.38-29,767.26-12,009.87

Finding the Fourth Proportional to 21,572.38, 29,767.26 and 12,009.87

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Solution

The fourth proportional to 21,572.38, 29,767.26 and 12,009.87 is: 16,572.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,572.38 : 29,767.26 = 12,009.87 : x
  2. Step 2: Convert to fraction form
    21,572.38/29,767.26 = 12,009.87/x
  3. Step 3: Cross multiply
    21,572.38x = 29,767.26 × 12,009.87
  4. Step 4: Simplify right side
    21,572.38x = 357,500,967.89
  5. Step 5: Solve for x
    x = 357,500,967.89/21,572.38
  6. Step 6: Final answer
    x = 16,572.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.