Home / 25,830.48-38,745.72-8,312.61

Finding the Fourth Proportional to 25,830.48, 38,745.72 and 8,312.61

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Solution

The fourth proportional to 25,830.48, 38,745.72 and 8,312.61 is: 12,468.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,830.48 : 38,745.72 = 8,312.61 : x
  2. Step 2: Convert to fraction form
    25,830.48/38,745.72 = 8,312.61/x
  3. Step 3: Cross multiply
    25,830.48x = 38,745.72 × 8,312.61
  4. Step 4: Simplify right side
    25,830.48x = 322,078,017.97
  5. Step 5: Solve for x
    x = 322,078,017.97/25,830.48
  6. Step 6: Final answer
    x = 12,468.91

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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.