Home / 25,012.40-34,515.83-13,679.69

Finding the Fourth Proportional to 25,012.40, 34,515.83 and 13,679.69

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Solution

The fourth proportional to 25,012.40, 34,515.83 and 13,679.69 is: 18,877.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,012.40 : 34,515.83 = 13,679.69 : x
  2. Step 2: Convert to fraction form
    25,012.40/34,515.83 = 13,679.69/x
  3. Step 3: Cross multiply
    25,012.40x = 34,515.83 × 13,679.69
  4. Step 4: Simplify right side
    25,012.40x = 472,165,854.49
  5. Step 5: Solve for x
    x = 472,165,854.49/25,012.40
  6. Step 6: Final answer
    x = 18,877.27

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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.