Home / 14,691.90-20,269.82-9,389.78

Finding the Fourth Proportional to 14,691.90, 20,269.82 and 9,389.78

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Solution

The fourth proportional to 14,691.90, 20,269.82 and 9,389.78 is: 12,954.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,691.90 : 20,269.82 = 9,389.78 : x
  2. Step 2: Convert to fraction form
    14,691.90/20,269.82 = 9,389.78/x
  3. Step 3: Cross multiply
    14,691.90x = 20,269.82 × 9,389.78
  4. Step 4: Simplify right side
    14,691.90x = 190,329,076.29
  5. Step 5: Solve for x
    x = 190,329,076.29/14,691.90
  6. Step 6: Final answer
    x = 12,954.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.