Home / 13,440.04-20,160.09-4,080.13

Finding the Fourth Proportional to 13,440.04, 20,160.09 and 4,080.13

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Solution

The fourth proportional to 13,440.04, 20,160.09 and 4,080.13 is: 6,120.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.04 : 20,160.09 = 4,080.13 : x
  2. Step 2: Convert to fraction form
    13,440.04/20,160.09 = 4,080.13/x
  3. Step 3: Cross multiply
    13,440.04x = 20,160.09 × 4,080.13
  4. Step 4: Simplify right side
    13,440.04x = 82,255,737.61
  5. Step 5: Solve for x
    x = 82,255,737.61/13,440.04
  6. Step 6: Final answer
    x = 6,120.20

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Half scale
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Double scale
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Similar ratio
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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.