Home / 15,388.08-21,248.18-9,731.98

Finding the Fourth Proportional to 15,388.08, 21,248.18 and 9,731.98

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Solution

The fourth proportional to 15,388.08, 21,248.18 and 9,731.98 is: 13,438.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,388.08 : 21,248.18 = 9,731.98 : x
  2. Step 2: Convert to fraction form
    15,388.08/21,248.18 = 9,731.98/x
  3. Step 3: Cross multiply
    15,388.08x = 21,248.18 × 9,731.98
  4. Step 4: Simplify right side
    15,388.08x = 206,786,862.80
  5. Step 5: Solve for x
    x = 206,786,862.80/15,388.08
  6. Step 6: Final answer
    x = 13,438.12

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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.