Home / 13,390.02-20,082.15-8,453.07

Finding the Fourth Proportional to 13,390.02, 20,082.15 and 8,453.07

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Solution

The fourth proportional to 13,390.02, 20,082.15 and 8,453.07 is: 12,677.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,390.02 : 20,082.15 = 8,453.07 : x
  2. Step 2: Convert to fraction form
    13,390.02/20,082.15 = 8,453.07/x
  3. Step 3: Cross multiply
    13,390.02x = 20,082.15 × 8,453.07
  4. Step 4: Simplify right side
    13,390.02x = 169,755,819.70
  5. Step 5: Solve for x
    x = 169,755,819.70/13,390.02
  6. Step 6: Final answer
    x = 12,677.79

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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.