Home / 25,905.87-38,862.45-12,758.36

Finding the Fourth Proportional to 25,905.87, 38,862.45 and 12,758.36

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Solution

The fourth proportional to 25,905.87, 38,862.45 and 12,758.36 is: 19,139.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,905.87 : 38,862.45 = 12,758.36 : x
  2. Step 2: Convert to fraction form
    25,905.87/38,862.45 = 12,758.36/x
  3. Step 3: Cross multiply
    25,905.87x = 38,862.45 × 12,758.36
  4. Step 4: Simplify right side
    25,905.87x = 495,820,933.27
  5. Step 5: Solve for x
    x = 495,820,933.27/25,905.87
  6. Step 6: Final answer
    x = 19,139.33

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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.