Home / 13,352.91-18,431.66-7,689.92

Finding the Fourth Proportional to 13,352.91, 18,431.66 and 7,689.92

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Solution

The fourth proportional to 13,352.91, 18,431.66 and 7,689.92 is: 10,614.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,352.91 : 18,431.66 = 7,689.92 : x
  2. Step 2: Convert to fraction form
    13,352.91/18,431.66 = 7,689.92/x
  3. Step 3: Cross multiply
    13,352.91x = 18,431.66 × 7,689.92
  4. Step 4: Simplify right side
    13,352.91x = 141,737,860.26
  5. Step 5: Solve for x
    x = 141,737,860.26/13,352.91
  6. Step 6: Final answer
    x = 10,614.75

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1.5x scale

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.