Home / 15,126.28-20,875.05-8,412.04

Finding the Fourth Proportional to 15,126.28, 20,875.05 and 8,412.04

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Solution

The fourth proportional to 15,126.28, 20,875.05 and 8,412.04 is: 11,609.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,126.28 : 20,875.05 = 8,412.04 : x
  2. Step 2: Convert to fraction form
    15,126.28/20,875.05 = 8,412.04/x
  3. Step 3: Cross multiply
    15,126.28x = 20,875.05 × 8,412.04
  4. Step 4: Simplify right side
    15,126.28x = 175,601,755.60
  5. Step 5: Solve for x
    x = 175,601,755.60/15,126.28
  6. Step 6: Final answer
    x = 11,609.05

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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.