Home / 25,012.40-34,515.72-13,679.64

Finding the Fourth Proportional to 25,012.40, 34,515.72 and 13,679.64

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Solution

The fourth proportional to 25,012.40, 34,515.72 and 13,679.64 is: 18,877.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,012.40 : 34,515.72 = 13,679.64 : x
  2. Step 2: Convert to fraction form
    25,012.40/34,515.72 = 13,679.64/x
  3. Step 3: Cross multiply
    25,012.40x = 34,515.72 × 13,679.64
  4. Step 4: Simplify right side
    25,012.40x = 472,162,623.94
  5. Step 5: Solve for x
    x = 472,162,623.94/25,012.40
  6. Step 6: Final answer
    x = 18,877.14

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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.