Home / 15,126.32-20,874.48-8,411.60

Finding the Fourth Proportional to 15,126.32, 20,874.48 and 8,411.60

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Solution

The fourth proportional to 15,126.32, 20,874.48 and 8,411.60 is: 11,608.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,126.32 : 20,874.48 = 8,411.60 : x
  2. Step 2: Convert to fraction form
    15,126.32/20,874.48 = 8,411.60/x
  3. Step 3: Cross multiply
    15,126.32x = 20,874.48 × 8,411.60
  4. Step 4: Simplify right side
    15,126.32x = 175,587,775.97
  5. Step 5: Solve for x
    x = 175,587,775.97/15,126.32
  6. Step 6: Final answer
    x = 11,608.10

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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.