Home / 21,109.66-29,130.45-11,549.50

Finding the Fourth Proportional to 21,109.66, 29,130.45 and 11,549.50

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Solution

The fourth proportional to 21,109.66, 29,130.45 and 11,549.50 is: 15,937.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,109.66 : 29,130.45 = 11,549.50 : x
  2. Step 2: Convert to fraction form
    21,109.66/29,130.45 = 11,549.50/x
  3. Step 3: Cross multiply
    21,109.66x = 29,130.45 × 11,549.50
  4. Step 4: Simplify right side
    21,109.66x = 336,442,132.28
  5. Step 5: Solve for x
    x = 336,442,132.28/21,109.66
  6. Step 6: Final answer
    x = 15,937.83

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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.