Home / 20,423.95-28,186.18-12,463.88

Finding the Fourth Proportional to 20,423.95, 28,186.18 and 12,463.88

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Solution

The fourth proportional to 20,423.95, 28,186.18 and 12,463.88 is: 17,200.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,423.95 : 28,186.18 = 12,463.88 : x
  2. Step 2: Convert to fraction form
    20,423.95/28,186.18 = 12,463.88/x
  3. Step 3: Cross multiply
    20,423.95x = 28,186.18 × 12,463.88
  4. Step 4: Simplify right side
    20,423.95x = 351,308,993.09
  5. Step 5: Solve for x
    x = 351,308,993.09/20,423.95
  6. Step 6: Final answer
    x = 17,200.84

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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.