Home / 18,770.40-25,899.12-11,318.24

Finding the Fourth Proportional to 18,770.40, 25,899.12 and 11,318.24

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Solution

The fourth proportional to 18,770.40, 25,899.12 and 11,318.24 is: 15,616.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,770.40 : 25,899.12 = 11,318.24 : x
  2. Step 2: Convert to fraction form
    18,770.40/25,899.12 = 11,318.24/x
  3. Step 3: Cross multiply
    18,770.40x = 25,899.12 × 11,318.24
  4. Step 4: Simplify right side
    18,770.40x = 293,132,455.95
  5. Step 5: Solve for x
    x = 293,132,455.95/18,770.40
  6. Step 6: Final answer
    x = 15,616.74

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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.