Home / 12,405.03-18,607.55-11,617.71

Finding the Fourth Proportional to 12,405.03, 18,607.55 and 11,617.71

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Solution

The fourth proportional to 12,405.03, 18,607.55 and 11,617.71 is: 17,426.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,405.03 : 18,607.55 = 11,617.71 : x
  2. Step 2: Convert to fraction form
    12,405.03/18,607.55 = 11,617.71/x
  3. Step 3: Cross multiply
    12,405.03x = 18,607.55 × 11,617.71
  4. Step 4: Simplify right side
    12,405.03x = 216,177,061.62
  5. Step 5: Solve for x
    x = 216,177,061.62/12,405.03
  6. Step 6: Final answer
    x = 17,426.57

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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.