Home / 11,989.85-18,010.69-10,144.67

Finding the Fourth Proportional to 11,989.85, 18,010.69 and 10,144.67

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Solution

The fourth proportional to 11,989.85, 18,010.69 and 10,144.67 is: 15,238.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,989.85 : 18,010.69 = 10,144.67 : x
  2. Step 2: Convert to fraction form
    11,989.85/18,010.69 = 10,144.67/x
  3. Step 3: Cross multiply
    11,989.85x = 18,010.69 × 10,144.67
  4. Step 4: Simplify right side
    11,989.85x = 182,712,391.11
  5. Step 5: Solve for x
    x = 182,712,391.11/11,989.85
  6. Step 6: Final answer
    x = 15,238.93

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Half scale
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Double scale
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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.