Home / 25,395.80-38,118.32-12,257.40

Finding the Fourth Proportional to 25,395.80, 38,118.32 and 12,257.40

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Solution

The fourth proportional to 25,395.80, 38,118.32 and 12,257.40 is: 18,397.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,395.80 : 38,118.32 = 12,257.40 : x
  2. Step 2: Convert to fraction form
    25,395.80/38,118.32 = 12,257.40/x
  3. Step 3: Cross multiply
    25,395.80x = 38,118.32 × 12,257.40
  4. Step 4: Simplify right side
    25,395.80x = 467,231,495.57
  5. Step 5: Solve for x
    x = 467,231,495.57/25,395.80
  6. Step 6: Final answer
    x = 18,397.98

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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.