Home / 15,371.18-21,198.03-11,402.18

Finding the Fourth Proportional to 15,371.18, 21,198.03 and 11,402.18

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Solution

The fourth proportional to 15,371.18, 21,198.03 and 11,402.18 is: 15,724.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,371.18 : 21,198.03 = 11,402.18 : x
  2. Step 2: Convert to fraction form
    15,371.18/21,198.03 = 11,402.18/x
  3. Step 3: Cross multiply
    15,371.18x = 21,198.03 × 11,402.18
  4. Step 4: Simplify right side
    15,371.18x = 241,703,753.71
  5. Step 5: Solve for x
    x = 241,703,753.71/15,371.18
  6. Step 6: Final answer
    x = 15,724.48

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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.