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Finding the Fourth Proportional to 18,700.38, 28,022.19 and 13,746.42

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Solution

The fourth proportional to 18,700.38, 28,022.19 and 13,746.42 is: 20,598.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,700.38 : 28,022.19 = 13,746.42 : x
  2. Step 2: Convert to fraction form
    18,700.38/28,022.19 = 13,746.42/x
  3. Step 3: Cross multiply
    18,700.38x = 28,022.19 × 13,746.42
  4. Step 4: Simplify right side
    18,700.38x = 385,204,793.06
  5. Step 5: Solve for x
    x = 385,204,793.06/18,700.38
  6. Step 6: Final answer
    x = 20,598.77

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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.