Home / 13,650.56-18,839.60-7,987.04

Finding the Fourth Proportional to 13,650.56, 18,839.60 and 7,987.04

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Solution

The fourth proportional to 13,650.56, 18,839.60 and 7,987.04 is: 11,023.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,650.56 : 18,839.60 = 7,987.04 : x
  2. Step 2: Convert to fraction form
    13,650.56/18,839.60 = 7,987.04/x
  3. Step 3: Cross multiply
    13,650.56x = 18,839.60 × 7,987.04
  4. Step 4: Simplify right side
    13,650.56x = 150,472,638.78
  5. Step 5: Solve for x
    x = 150,472,638.78/13,650.56
  6. Step 6: Final answer
    x = 11,023.18

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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.