Home / 13,123.06-18,109.11-7,534.06

Finding the Fourth Proportional to 13,123.06, 18,109.11 and 7,534.06

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Solution

The fourth proportional to 13,123.06, 18,109.11 and 7,534.06 is: 10,396.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,123.06 : 18,109.11 = 7,534.06 : x
  2. Step 2: Convert to fraction form
    13,123.06/18,109.11 = 7,534.06/x
  3. Step 3: Cross multiply
    13,123.06x = 18,109.11 × 7,534.06
  4. Step 4: Simplify right side
    13,123.06x = 136,435,121.29
  5. Step 5: Solve for x
    x = 136,435,121.29/13,123.06
  6. Step 6: Final answer
    x = 10,396.59

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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.