Home / 10,806.79-14,916.20-7,040.29

Finding the Fourth Proportional to 10,806.79, 14,916.20 and 7,040.29

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Solution

The fourth proportional to 10,806.79, 14,916.20 and 7,040.29 is: 9,717.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,806.79 : 14,916.20 = 7,040.29 : x
  2. Step 2: Convert to fraction form
    10,806.79/14,916.20 = 7,040.29/x
  3. Step 3: Cross multiply
    10,806.79x = 14,916.20 × 7,040.29
  4. Step 4: Simplify right side
    10,806.79x = 105,014,373.70
  5. Step 5: Solve for x
    x = 105,014,373.70/10,806.79
  6. Step 6: Final answer
    x = 9,717.44

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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.