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Finding the Fourth Proportional to 38,710.80, 58,020.84 and 17,890.56

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Solution

The fourth proportional to 38,710.80, 58,020.84 and 17,890.56 is: 26,814.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,710.80 : 58,020.84 = 17,890.56 : x
  2. Step 2: Convert to fraction form
    38,710.80/58,020.84 = 17,890.56/x
  3. Step 3: Cross multiply
    38,710.80x = 58,020.84 × 17,890.56
  4. Step 4: Simplify right side
    38,710.80x = 1,038,025,319.27
  5. Step 5: Solve for x
    x = 1,038,025,319.27/38,710.80
  6. Step 6: Final answer
    x = 26,814.88

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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.