Home / 21,126.47-29,155.06-11,566.88

Finding the Fourth Proportional to 21,126.47, 29,155.06 and 11,566.88

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Solution

The fourth proportional to 21,126.47, 29,155.06 and 11,566.88 is: 15,962.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,126.47 : 29,155.06 = 11,566.88 : x
  2. Step 2: Convert to fraction form
    21,126.47/29,155.06 = 11,566.88/x
  3. Step 3: Cross multiply
    21,126.47x = 29,155.06 × 11,566.88
  4. Step 4: Simplify right side
    21,126.47x = 337,233,008.96
  5. Step 5: Solve for x
    x = 337,233,008.96/21,126.47
  6. Step 6: Final answer
    x = 15,962.58

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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.