Home / 19,660.17-29,420.97-12,268.11

Finding the Fourth Proportional to 19,660.17, 29,420.97 and 12,268.11

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Solution

The fourth proportional to 19,660.17, 29,420.97 and 12,268.11 is: 18,358.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,660.17 : 29,420.97 = 12,268.11 : x
  2. Step 2: Convert to fraction form
    19,660.17/29,420.97 = 12,268.11/x
  3. Step 3: Cross multiply
    19,660.17x = 29,420.97 × 12,268.11
  4. Step 4: Simplify right side
    19,660.17x = 360,939,696.27
  5. Step 5: Solve for x
    x = 360,939,696.27/19,660.17
  6. Step 6: Final answer
    x = 18,358.93

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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.