Home / 18,500.28-25,537.98-12,540.12

Finding the Fourth Proportional to 18,500.28, 25,537.98 and 12,540.12

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Solution

The fourth proportional to 18,500.28, 25,537.98 and 12,540.12 is: 17,310.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,500.28 : 25,537.98 = 12,540.12 : x
  2. Step 2: Convert to fraction form
    18,500.28/25,537.98 = 12,540.12/x
  3. Step 3: Cross multiply
    18,500.28x = 25,537.98 × 12,540.12
  4. Step 4: Simplify right side
    18,500.28x = 320,249,333.76
  5. Step 5: Solve for x
    x = 320,249,333.76/18,500.28
  6. Step 6: Final answer
    x = 17,310.51

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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.