Home / 15,427.70-21,290.12-8,353.96

Finding the Fourth Proportional to 15,427.70, 21,290.12 and 8,353.96

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Solution

The fourth proportional to 15,427.70, 21,290.12 and 8,353.96 is: 11,528.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,427.70 : 21,290.12 = 8,353.96 : x
  2. Step 2: Convert to fraction form
    15,427.70/21,290.12 = 8,353.96/x
  3. Step 3: Cross multiply
    15,427.70x = 21,290.12 × 8,353.96
  4. Step 4: Simplify right side
    15,427.70x = 177,856,810.88
  5. Step 5: Solve for x
    x = 177,856,810.88/15,427.70
  6. Step 6: Final answer
    x = 11,528.41

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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.