Home / 15,427.70-21,290.26-8,354.13

Finding the Fourth Proportional to 15,427.70, 21,290.26 and 8,354.13

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Solution

The fourth proportional to 15,427.70, 21,290.26 and 8,354.13 is: 11,528.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,427.70 : 21,290.26 = 8,354.13 : x
  2. Step 2: Convert to fraction form
    15,427.70/21,290.26 = 8,354.13/x
  3. Step 3: Cross multiply
    15,427.70x = 21,290.26 × 8,354.13
  4. Step 4: Simplify right side
    15,427.70x = 177,861,599.77
  5. Step 5: Solve for x
    x = 177,861,599.77/15,427.70
  6. Step 6: Final answer
    x = 11,528.72

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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.