Home / 20,499.90-28,292.54-11,549.13

Finding the Fourth Proportional to 20,499.90, 28,292.54 and 11,549.13

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Solution

The fourth proportional to 20,499.90, 28,292.54 and 11,549.13 is: 15,939.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,499.90 : 28,292.54 = 11,549.13 : x
  2. Step 2: Convert to fraction form
    20,499.90/28,292.54 = 11,549.13/x
  3. Step 3: Cross multiply
    20,499.90x = 28,292.54 × 11,549.13
  4. Step 4: Simplify right side
    20,499.90x = 326,754,164.74
  5. Step 5: Solve for x
    x = 326,754,164.74/20,499.90
  6. Step 6: Final answer
    x = 15,939.31

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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.