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Finding the Fourth Proportional to 38,759.99, 58,139.84 and 13,800.98

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Solution

The fourth proportional to 38,759.99, 58,139.84 and 13,800.98 is: 20,701.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,759.99 : 58,139.84 = 13,800.98 : x
  2. Step 2: Convert to fraction form
    38,759.99/58,139.84 = 13,800.98/x
  3. Step 3: Cross multiply
    38,759.99x = 58,139.84 × 13,800.98
  4. Step 4: Simplify right side
    38,759.99x = 802,386,948.90
  5. Step 5: Solve for x
    x = 802,386,948.90/38,759.99
  6. Step 6: Final answer
    x = 20,701.43

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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.