Home / 20,416.76-28,178.18-12,463.61

Finding the Fourth Proportional to 20,416.76, 28,178.18 and 12,463.61

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Solution

The fourth proportional to 20,416.76, 28,178.18 and 12,463.61 is: 17,201.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,416.76 : 28,178.18 = 12,463.61 : x
  2. Step 2: Convert to fraction form
    20,416.76/28,178.18 = 12,463.61/x
  3. Step 3: Cross multiply
    20,416.76x = 28,178.18 × 12,463.61
  4. Step 4: Simplify right side
    20,416.76x = 351,201,689.56
  5. Step 5: Solve for x
    x = 351,201,689.56/20,416.76
  6. Step 6: Final answer
    x = 17,201.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.