Home / 19,917.30-29,875.97-5,126.25

Finding the Fourth Proportional to 19,917.30, 29,875.97 and 5,126.25

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Solution

The fourth proportional to 19,917.30, 29,875.97 and 5,126.25 is: 7,689.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,917.30 : 29,875.97 = 5,126.25 : x
  2. Step 2: Convert to fraction form
    19,917.30/29,875.97 = 5,126.25/x
  3. Step 3: Cross multiply
    19,917.30x = 29,875.97 × 5,126.25
  4. Step 4: Simplify right side
    19,917.30x = 153,151,691.21
  5. Step 5: Solve for x
    x = 153,151,691.21/19,917.30
  6. Step 6: Final answer
    x = 7,689.38

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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.