Home / 13,204.55-18,223.76-7,540.11

Finding the Fourth Proportional to 13,204.55, 18,223.76 and 7,540.11

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Solution

The fourth proportional to 13,204.55, 18,223.76 and 7,540.11 is: 10,406.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,204.55 : 18,223.76 = 7,540.11 : x
  2. Step 2: Convert to fraction form
    13,204.55/18,223.76 = 7,540.11/x
  3. Step 3: Cross multiply
    13,204.55x = 18,223.76 × 7,540.11
  4. Step 4: Simplify right side
    13,204.55x = 137,409,173.86
  5. Step 5: Solve for x
    x = 137,409,173.86/13,204.55
  6. Step 6: Final answer
    x = 10,406.20

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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.