Home / 15,453.70-21,325.92-8,380.04

Finding the Fourth Proportional to 15,453.70, 21,325.92 and 8,380.04

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Solution

The fourth proportional to 15,453.70, 21,325.92 and 8,380.04 is: 11,564.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,453.70 : 21,325.92 = 8,380.04 : x
  2. Step 2: Convert to fraction form
    15,453.70/21,325.92 = 8,380.04/x
  3. Step 3: Cross multiply
    15,453.70x = 21,325.92 × 8,380.04
  4. Step 4: Simplify right side
    15,453.70x = 178,711,924.58
  5. Step 5: Solve for x
    x = 178,711,924.58/15,453.70
  6. Step 6: Final answer
    x = 11,564.35

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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.