Home / 25,862.80-35,689.71-15,808.09

Finding the Fourth Proportional to 25,862.80, 35,689.71 and 15,808.09

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Solution

The fourth proportional to 25,862.80, 35,689.71 and 15,808.09 is: 21,814.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,862.80 : 35,689.71 = 15,808.09 : x
  2. Step 2: Convert to fraction form
    25,862.80/35,689.71 = 15,808.09/x
  3. Step 3: Cross multiply
    25,862.80x = 35,689.71 × 15,808.09
  4. Step 4: Simplify right side
    25,862.80x = 564,186,147.75
  5. Step 5: Solve for x
    x = 564,186,147.75/25,862.80
  6. Step 6: Final answer
    x = 21,814.58

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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.