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Finding the Fourth Proportional to 38,891.50, 58,345.89 and 14,267.50

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Solution

The fourth proportional to 38,891.50, 58,345.89 and 14,267.50 is: 21,404.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,891.50 : 58,345.89 = 14,267.50 : x
  2. Step 2: Convert to fraction form
    38,891.50/58,345.89 = 14,267.50/x
  3. Step 3: Cross multiply
    38,891.50x = 58,345.89 × 14,267.50
  4. Step 4: Simplify right side
    38,891.50x = 832,449,985.58
  5. Step 5: Solve for x
    x = 832,449,985.58/38,891.50
  6. Step 6: Final answer
    x = 21,404.42

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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.