Home / 20,474.10-28,245.51-14,812.20

Finding the Fourth Proportional to 20,474.10, 28,245.51 and 14,812.20

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Solution

The fourth proportional to 20,474.10, 28,245.51 and 14,812.20 is: 20,434.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,474.10 : 28,245.51 = 14,812.20 : x
  2. Step 2: Convert to fraction form
    20,474.10/28,245.51 = 14,812.20/x
  3. Step 3: Cross multiply
    20,474.10x = 28,245.51 × 14,812.20
  4. Step 4: Simplify right side
    20,474.10x = 418,378,143.22
  5. Step 5: Solve for x
    x = 418,378,143.22/20,474.10
  6. Step 6: Final answer
    x = 20,434.51

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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.