Home / 20,719.24-28,592.54-11,287.80

Finding the Fourth Proportional to 20,719.24, 28,592.54 and 11,287.80

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Solution

The fourth proportional to 20,719.24, 28,592.54 and 11,287.80 is: 15,577.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719.24 : 28,592.54 = 11,287.80 : x
  2. Step 2: Convert to fraction form
    20,719.24/28,592.54 = 11,287.80/x
  3. Step 3: Cross multiply
    20,719.24x = 28,592.54 × 11,287.80
  4. Step 4: Simplify right side
    20,719.24x = 322,746,873.01
  5. Step 5: Solve for x
    x = 322,746,873.01/20,719.24
  6. Step 6: Final answer
    x = 15,577.16

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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.