Home / 18,105.90-24,992.28-11,402.76

Finding the Fourth Proportional to 18,105.90, 24,992.28 and 11,402.76

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Solution

The fourth proportional to 18,105.90, 24,992.28 and 11,402.76 is: 15,739.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,105.90 : 24,992.28 = 11,402.76 : x
  2. Step 2: Convert to fraction form
    18,105.90/24,992.28 = 11,402.76/x
  3. Step 3: Cross multiply
    18,105.90x = 24,992.28 × 11,402.76
  4. Step 4: Simplify right side
    18,105.90x = 284,980,970.69
  5. Step 5: Solve for x
    x = 284,980,970.69/18,105.90
  6. Step 6: Final answer
    x = 15,739.67

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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.