Home / 13,603.68-18,766.89-9,122.76

Finding the Fourth Proportional to 13,603.68, 18,766.89 and 9,122.76

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Solution

The fourth proportional to 13,603.68, 18,766.89 and 9,122.76 is: 12,585.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,603.68 : 18,766.89 = 9,122.76 : x
  2. Step 2: Convert to fraction form
    13,603.68/18,766.89 = 9,122.76/x
  3. Step 3: Cross multiply
    13,603.68x = 18,766.89 × 9,122.76
  4. Step 4: Simplify right side
    13,603.68x = 171,205,833.42
  5. Step 5: Solve for x
    x = 171,205,833.42/13,603.68
  6. Step 6: Final answer
    x = 12,585.26

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Half scale
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Double scale
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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.