Home / 11,397.18-15,719.13-7,419.54

Finding the Fourth Proportional to 11,397.18, 15,719.13 and 7,419.54

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Solution

The fourth proportional to 11,397.18, 15,719.13 and 7,419.54 is: 10,233.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,397.18 : 15,719.13 = 7,419.54 : x
  2. Step 2: Convert to fraction form
    11,397.18/15,719.13 = 7,419.54/x
  3. Step 3: Cross multiply
    11,397.18x = 15,719.13 × 7,419.54
  4. Step 4: Simplify right side
    11,397.18x = 116,628,713.80
  5. Step 5: Solve for x
    x = 116,628,713.80/11,397.18
  6. Step 6: Final answer
    x = 10,233.12

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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.