Home / 13,432.80-18,519.12-11,333.28

Finding the Fourth Proportional to 13,432.80, 18,519.12 and 11,333.28

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Solution

The fourth proportional to 13,432.80, 18,519.12 and 11,333.28 is: 15,624.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,432.80 : 18,519.12 = 11,333.28 : x
  2. Step 2: Convert to fraction form
    13,432.80/18,519.12 = 11,333.28/x
  3. Step 3: Cross multiply
    13,432.80x = 18,519.12 × 11,333.28
  4. Step 4: Simplify right side
    13,432.80x = 209,882,372.31
  5. Step 5: Solve for x
    x = 209,882,372.31/13,432.80
  6. Step 6: Final answer
    x = 15,624.62

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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.