Home / 15,472.30-21,351.64-8,398.72

Finding the Fourth Proportional to 15,472.30, 21,351.64 and 8,398.72

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Solution

The fourth proportional to 15,472.30, 21,351.64 and 8,398.72 is: 11,590.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,472.30 : 21,351.64 = 8,398.72 : x
  2. Step 2: Convert to fraction form
    15,472.30/21,351.64 = 8,398.72/x
  3. Step 3: Cross multiply
    15,472.30x = 21,351.64 × 8,398.72
  4. Step 4: Simplify right side
    15,472.30x = 179,326,445.90
  5. Step 5: Solve for x
    x = 179,326,445.90/15,472.30
  6. Step 6: Final answer
    x = 11,590.16

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1.5x scale

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.