Home / 13,301.28-19,916.28-10,422.90

Finding the Fourth Proportional to 13,301.28, 19,916.28 and 10,422.90

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Solution

The fourth proportional to 13,301.28, 19,916.28 and 10,422.90 is: 15,606.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,301.28 : 19,916.28 = 10,422.90 : x
  2. Step 2: Convert to fraction form
    13,301.28/19,916.28 = 10,422.90/x
  3. Step 3: Cross multiply
    13,301.28x = 19,916.28 × 10,422.90
  4. Step 4: Simplify right side
    13,301.28x = 207,585,394.81
  5. Step 5: Solve for x
    x = 207,585,394.81/13,301.28
  6. Step 6: Final answer
    x = 15,606.42

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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.