Home / 18,818.47-28,337.65-13,922.56

Finding the Fourth Proportional to 18,818.47, 28,337.65 and 13,922.56

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Solution

The fourth proportional to 18,818.47, 28,337.65 and 13,922.56 is: 20,965.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.47 : 28,337.65 = 13,922.56 : x
  2. Step 2: Convert to fraction form
    18,818.47/28,337.65 = 13,922.56/x
  3. Step 3: Cross multiply
    18,818.47x = 28,337.65 × 13,922.56
  4. Step 4: Simplify right side
    18,818.47x = 394,532,632.38
  5. Step 5: Solve for x
    x = 394,532,632.38/18,818.47
  6. Step 6: Final answer
    x = 20,965.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.