Home / 12,088.40-18,132.60-8,589.20

Finding the Fourth Proportional to 12,088.40, 18,132.60 and 8,589.20

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Solution

The fourth proportional to 12,088.40, 18,132.60 and 8,589.20 is: 12,883.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,088.40 : 18,132.60 = 8,589.20 : x
  2. Step 2: Convert to fraction form
    12,088.40/18,132.60 = 8,589.20/x
  3. Step 3: Cross multiply
    12,088.40x = 18,132.60 × 8,589.20
  4. Step 4: Simplify right side
    12,088.40x = 155,744,527.92
  5. Step 5: Solve for x
    x = 155,744,527.92/12,088.40
  6. Step 6: Final answer
    x = 12,883.80

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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.