Home / 13,122.75-18,110.12-7,534.11

Finding the Fourth Proportional to 13,122.75, 18,110.12 and 7,534.11

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Solution

The fourth proportional to 13,122.75, 18,110.12 and 7,534.11 is: 10,397.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122.75 : 18,110.12 = 7,534.11 : x
  2. Step 2: Convert to fraction form
    13,122.75/18,110.12 = 7,534.11/x
  3. Step 3: Cross multiply
    13,122.75x = 18,110.12 × 7,534.11
  4. Step 4: Simplify right side
    13,122.75x = 136,443,598.52
  5. Step 5: Solve for x
    x = 136,443,598.52/13,122.75
  6. Step 6: Final answer
    x = 10,397.49

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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.