Home / 12,148.57-18,222.86-9,379.28

Finding the Fourth Proportional to 12,148.57, 18,222.86 and 9,379.28

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Solution

The fourth proportional to 12,148.57, 18,222.86 and 9,379.28 is: 14,068.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,148.57 : 18,222.86 = 9,379.28 : x
  2. Step 2: Convert to fraction form
    12,148.57/18,222.86 = 9,379.28/x
  3. Step 3: Cross multiply
    12,148.57x = 18,222.86 × 9,379.28
  4. Step 4: Simplify right side
    12,148.57x = 170,917,306.34
  5. Step 5: Solve for x
    x = 170,917,306.34/12,148.57
  6. Step 6: Final answer
    x = 14,068.92

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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.