Home / 28,172.32-42,231.18-15,680.92

Finding the Fourth Proportional to 28,172.32, 42,231.18 and 15,680.92

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Solution

The fourth proportional to 28,172.32, 42,231.18 and 15,680.92 is: 23,506.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,172.32 : 42,231.18 = 15,680.92 : x
  2. Step 2: Convert to fraction form
    28,172.32/42,231.18 = 15,680.92/x
  3. Step 3: Cross multiply
    28,172.32x = 42,231.18 × 15,680.92
  4. Step 4: Simplify right side
    28,172.32x = 662,223,755.09
  5. Step 5: Solve for x
    x = 662,223,755.09/28,172.32
  6. Step 6: Final answer
    x = 23,506.18

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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.