Home / 20,500.59-30,720.96-9,088.75

Finding the Fourth Proportional to 20,500.59, 30,720.96 and 9,088.75

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Solution

The fourth proportional to 20,500.59, 30,720.96 and 9,088.75 is: 13,619.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,500.59 : 30,720.96 = 9,088.75 : x
  2. Step 2: Convert to fraction form
    20,500.59/30,720.96 = 9,088.75/x
  3. Step 3: Cross multiply
    20,500.59x = 30,720.96 × 9,088.75
  4. Step 4: Simplify right side
    20,500.59x = 279,215,125.20
  5. Step 5: Solve for x
    x = 279,215,125.20/20,500.59
  6. Step 6: Final answer
    x = 13,619.86

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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.