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Finding the Fourth Proportional to 39,172.80, 58,758 and 9,590.72

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Solution

The fourth proportional to 39,172.80, 58,758 and 9,590.72 is: 14,385.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,172.80 : 58,758 = 9,590.72 : x
  2. Step 2: Convert to fraction form
    39,172.80/58,758 = 9,590.72/x
  3. Step 3: Cross multiply
    39,172.80x = 58,758 × 9,590.72
  4. Step 4: Simplify right side
    39,172.80x = 563,531,525.76
  5. Step 5: Solve for x
    x = 563,531,525.76/39,172.80
  6. Step 6: Final answer
    x = 14,385.79

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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.