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Finding the Fourth Proportional to 18,829.27, 26,011.43 and 15,047.48

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Solution

The fourth proportional to 18,829.27, 26,011.43 and 15,047.48 is: 20,787.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,829.27 : 26,011.43 = 15,047.48 : x
  2. Step 2: Convert to fraction form
    18,829.27/26,011.43 = 15,047.48/x
  3. Step 3: Cross multiply
    18,829.27x = 26,011.43 × 15,047.48
  4. Step 4: Simplify right side
    18,829.27x = 391,406,472.70
  5. Step 5: Solve for x
    x = 391,406,472.70/18,829.27
  6. Step 6: Final answer
    x = 20,787.13

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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.