Home / 15,338.28-21,165.62-8,622.63

Finding the Fourth Proportional to 15,338.28, 21,165.62 and 8,622.63

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Solution

The fourth proportional to 15,338.28, 21,165.62 and 8,622.63 is: 11,898.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,338.28 : 21,165.62 = 8,622.63 : x
  2. Step 2: Convert to fraction form
    15,338.28/21,165.62 = 8,622.63/x
  3. Step 3: Cross multiply
    15,338.28x = 21,165.62 × 8,622.63
  4. Step 4: Simplify right side
    15,338.28x = 182,503,266.87
  5. Step 5: Solve for x
    x = 182,503,266.87/15,338.28
  6. Step 6: Final answer
    x = 11,898.55

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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.