Home / 10,815.71-16,225.19-3,417.80

Finding the Fourth Proportional to 10,815.71, 16,225.19 and 3,417.80

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Solution

The fourth proportional to 10,815.71, 16,225.19 and 3,417.80 is: 5,127.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,815.71 : 16,225.19 = 3,417.80 : x
  2. Step 2: Convert to fraction form
    10,815.71/16,225.19 = 3,417.80/x
  3. Step 3: Cross multiply
    10,815.71x = 16,225.19 × 3,417.80
  4. Step 4: Simplify right side
    10,815.71x = 55,454,437.29
  5. Step 5: Solve for x
    x = 55,454,437.29/10,815.71
  6. Step 6: Final answer
    x = 5,127.21

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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.