Home / 20,142.12-30,186.45-9,046.74

Finding the Fourth Proportional to 20,142.12, 30,186.45 and 9,046.74

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Solution

The fourth proportional to 20,142.12, 30,186.45 and 9,046.74 is: 13,558.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142.12 : 30,186.45 = 9,046.74 : x
  2. Step 2: Convert to fraction form
    20,142.12/30,186.45 = 9,046.74/x
  3. Step 3: Cross multiply
    20,142.12x = 30,186.45 × 9,046.74
  4. Step 4: Simplify right side
    20,142.12x = 273,088,964.67
  5. Step 5: Solve for x
    x = 273,088,964.67/20,142.12
  6. Step 6: Final answer
    x = 13,558.10

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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.