Home / 25,868.88-38,748.12-12,521.64

Finding the Fourth Proportional to 25,868.88, 38,748.12 and 12,521.64

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Solution

The fourth proportional to 25,868.88, 38,748.12 and 12,521.64 is: 18,755.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,868.88 : 38,748.12 = 12,521.64 : x
  2. Step 2: Convert to fraction form
    25,868.88/38,748.12 = 12,521.64/x
  3. Step 3: Cross multiply
    25,868.88x = 38,748.12 × 12,521.64
  4. Step 4: Simplify right side
    25,868.88x = 485,190,009.32
  5. Step 5: Solve for x
    x = 485,190,009.32/25,868.88
  6. Step 6: Final answer
    x = 18,755.74

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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.