Home / 13,445.30-20,129.55-12,062.90

Finding the Fourth Proportional to 13,445.30, 20,129.55 and 12,062.90

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Solution

The fourth proportional to 13,445.30, 20,129.55 and 12,062.90 is: 18,059.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.30 : 20,129.55 = 12,062.90 : x
  2. Step 2: Convert to fraction form
    13,445.30/20,129.55 = 12,062.90/x
  3. Step 3: Cross multiply
    13,445.30x = 20,129.55 × 12,062.90
  4. Step 4: Simplify right side
    13,445.30x = 242,820,748.70
  5. Step 5: Solve for x
    x = 242,820,748.70/13,445.30
  6. Step 6: Final answer
    x = 18,059.90

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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.