Home / 25,012.17-34,515.36-13,679.40

Finding the Fourth Proportional to 25,012.17, 34,515.36 and 13,679.40

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Solution

The fourth proportional to 25,012.17, 34,515.36 and 13,679.40 is: 18,876.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,012.17 : 34,515.36 = 13,679.40 : x
  2. Step 2: Convert to fraction form
    25,012.17/34,515.36 = 13,679.40/x
  3. Step 3: Cross multiply
    25,012.17x = 34,515.36 × 13,679.40
  4. Step 4: Simplify right side
    25,012.17x = 472,149,415.58
  5. Step 5: Solve for x
    x = 472,149,415.58/25,012.17
  6. Step 6: Final answer
    x = 18,876.79

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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.