Home / 17,721.19-26,581.79-12,157.67

Finding the Fourth Proportional to 17,721.19, 26,581.79 and 12,157.67

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Solution

The fourth proportional to 17,721.19, 26,581.79 and 12,157.67 is: 18,236.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,721.19 : 26,581.79 = 12,157.67 : x
  2. Step 2: Convert to fraction form
    17,721.19/26,581.79 = 12,157.67/x
  3. Step 3: Cross multiply
    17,721.19x = 26,581.79 × 12,157.67
  4. Step 4: Simplify right side
    17,721.19x = 323,172,610.17
  5. Step 5: Solve for x
    x = 323,172,610.17/17,721.19
  6. Step 6: Final answer
    x = 18,236.50

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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.