Home / 12,385.89-18,552.57-9,740.85

Finding the Fourth Proportional to 12,385.89, 18,552.57 and 9,740.85

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Solution

The fourth proportional to 12,385.89, 18,552.57 and 9,740.85 is: 14,590.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,385.89 : 18,552.57 = 9,740.85 : x
  2. Step 2: Convert to fraction form
    12,385.89/18,552.57 = 9,740.85/x
  3. Step 3: Cross multiply
    12,385.89x = 18,552.57 × 9,740.85
  4. Step 4: Simplify right side
    12,385.89x = 180,717,801.48
  5. Step 5: Solve for x
    x = 180,717,801.48/12,385.89
  6. Step 6: Final answer
    x = 14,590.62

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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.