Home / 13,428.18-20,117.97-10,456.29

Finding the Fourth Proportional to 13,428.18, 20,117.97 and 10,456.29

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Solution

The fourth proportional to 13,428.18, 20,117.97 and 10,456.29 is: 15,665.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.18 : 20,117.97 = 10,456.29 : x
  2. Step 2: Convert to fraction form
    13,428.18/20,117.97 = 10,456.29/x
  3. Step 3: Cross multiply
    13,428.18x = 20,117.97 × 10,456.29
  4. Step 4: Simplify right side
    13,428.18x = 210,359,328.53
  5. Step 5: Solve for x
    x = 210,359,328.53/13,428.18
  6. Step 6: Final answer
    x = 15,665.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.