Home / 21,126.53-29,155.07-11,566.82

Finding the Fourth Proportional to 21,126.53, 29,155.07 and 11,566.82

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Solution

The fourth proportional to 21,126.53, 29,155.07 and 11,566.82 is: 15,962.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,126.53 : 29,155.07 = 11,566.82 : x
  2. Step 2: Convert to fraction form
    21,126.53/29,155.07 = 11,566.82/x
  3. Step 3: Cross multiply
    21,126.53x = 29,155.07 × 11,566.82
  4. Step 4: Simplify right side
    21,126.53x = 337,231,548.58
  5. Step 5: Solve for x
    x = 337,231,548.58/21,126.53
  6. Step 6: Final answer
    x = 15,962.47

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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.