Home / 15,172.09-22,728.10-7,155.88

Finding the Fourth Proportional to 15,172.09, 22,728.10 and 7,155.88

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Solution

The fourth proportional to 15,172.09, 22,728.10 and 7,155.88 is: 10,719.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,172.09 : 22,728.10 = 7,155.88 : x
  2. Step 2: Convert to fraction form
    15,172.09/22,728.10 = 7,155.88/x
  3. Step 3: Cross multiply
    15,172.09x = 22,728.10 × 7,155.88
  4. Step 4: Simplify right side
    15,172.09x = 162,639,538.34
  5. Step 5: Solve for x
    x = 162,639,538.34/15,172.09
  6. Step 6: Final answer
    x = 10,719.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.