Home / 12,126.15-18,189.23-5,547.74

Finding the Fourth Proportional to 12,126.15, 18,189.23 and 5,547.74

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Solution

The fourth proportional to 12,126.15, 18,189.23 and 5,547.74 is: 8,321.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.15 : 18,189.23 = 5,547.74 : x
  2. Step 2: Convert to fraction form
    12,126.15/18,189.23 = 5,547.74/x
  3. Step 3: Cross multiply
    12,126.15x = 18,189.23 × 5,547.74
  4. Step 4: Simplify right side
    12,126.15x = 100,909,000.16
  5. Step 5: Solve for x
    x = 100,909,000.16/12,126.15
  6. Step 6: Final answer
    x = 8,321.60

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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.