Home / 13,411.24-18,478.02-11,719.72

Finding the Fourth Proportional to 13,411.24, 18,478.02 and 11,719.72

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Solution

The fourth proportional to 13,411.24, 18,478.02 and 11,719.72 is: 16,147.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,411.24 : 18,478.02 = 11,719.72 : x
  2. Step 2: Convert to fraction form
    13,411.24/18,478.02 = 11,719.72/x
  3. Step 3: Cross multiply
    13,411.24x = 18,478.02 × 11,719.72
  4. Step 4: Simplify right side
    13,411.24x = 216,557,220.55
  5. Step 5: Solve for x
    x = 216,557,220.55/13,411.24
  6. Step 6: Final answer
    x = 16,147.44

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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.