Home / 15,127.20-20,874.51-8,412.30

Finding the Fourth Proportional to 15,127.20, 20,874.51 and 8,412.30

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Solution

The fourth proportional to 15,127.20, 20,874.51 and 8,412.30 is: 11,608.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,127.20 : 20,874.51 = 8,412.30 : x
  2. Step 2: Convert to fraction form
    15,127.20/20,874.51 = 8,412.30/x
  3. Step 3: Cross multiply
    15,127.20x = 20,874.51 × 8,412.30
  4. Step 4: Simplify right side
    15,127.20x = 175,602,640.47
  5. Step 5: Solve for x
    x = 175,602,640.47/15,127.20
  6. Step 6: Final answer
    x = 11,608.40

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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.