Home / 20,719.16-28,592.43-11,287.71

Finding the Fourth Proportional to 20,719.16, 28,592.43 and 11,287.71

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Solution

The fourth proportional to 20,719.16, 28,592.43 and 11,287.71 is: 15,577.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719.16 : 28,592.43 = 11,287.71 : x
  2. Step 2: Convert to fraction form
    20,719.16/28,592.43 = 11,287.71/x
  3. Step 3: Cross multiply
    20,719.16x = 28,592.43 × 11,287.71
  4. Step 4: Simplify right side
    20,719.16x = 322,743,058.04
  5. Step 5: Solve for x
    x = 322,743,058.04/20,719.16
  6. Step 6: Final answer
    x = 15,577.04

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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.