Home / 18,143.28-25,035.84-11,071.44

Finding the Fourth Proportional to 18,143.28, 25,035.84 and 11,071.44

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Solution

The fourth proportional to 18,143.28, 25,035.84 and 11,071.44 is: 15,277.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,143.28 : 25,035.84 = 11,071.44 : x
  2. Step 2: Convert to fraction form
    18,143.28/25,035.84 = 11,071.44/x
  3. Step 3: Cross multiply
    18,143.28x = 25,035.84 × 11,071.44
  4. Step 4: Simplify right side
    18,143.28x = 277,182,800.41
  5. Step 5: Solve for x
    x = 277,182,800.41/18,143.28
  6. Step 6: Final answer
    x = 15,277.44

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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.