Home / 28,715.60-43,073.40-9,000.20

Finding the Fourth Proportional to 28,715.60, 43,073.40 and 9,000.20

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Solution

The fourth proportional to 28,715.60, 43,073.40 and 9,000.20 is: 13,500.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,715.60 : 43,073.40 = 9,000.20 : x
  2. Step 2: Convert to fraction form
    28,715.60/43,073.40 = 9,000.20/x
  3. Step 3: Cross multiply
    28,715.60x = 43,073.40 × 9,000.20
  4. Step 4: Simplify right side
    28,715.60x = 387,669,214.68
  5. Step 5: Solve for x
    x = 387,669,214.68/28,715.60
  6. Step 6: Final answer
    x = 13,500.30

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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.