Home / 12,158.47-18,237.71-9,389.19

Finding the Fourth Proportional to 12,158.47, 18,237.71 and 9,389.19

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Solution

The fourth proportional to 12,158.47, 18,237.71 and 9,389.19 is: 14,083.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,158.47 : 18,237.71 = 9,389.19 : x
  2. Step 2: Convert to fraction form
    12,158.47/18,237.71 = 9,389.19/x
  3. Step 3: Cross multiply
    12,158.47x = 18,237.71 × 9,389.19
  4. Step 4: Simplify right side
    12,158.47x = 171,237,324.35
  5. Step 5: Solve for x
    x = 171,237,324.35/12,158.47
  6. Step 6: Final answer
    x = 14,083.79

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Similar ratio
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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.