Home / 25,967.20-38,961.60-8,442.40

Finding the Fourth Proportional to 25,967.20, 38,961.60 and 8,442.40

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Solution

The fourth proportional to 25,967.20, 38,961.60 and 8,442.40 is: 12,667.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,967.20 : 38,961.60 = 8,442.40 : x
  2. Step 2: Convert to fraction form
    25,967.20/38,961.60 = 8,442.40/x
  3. Step 3: Cross multiply
    25,967.20x = 38,961.60 × 8,442.40
  4. Step 4: Simplify right side
    25,967.20x = 328,929,411.84
  5. Step 5: Solve for x
    x = 328,929,411.84/25,967.20
  6. Step 6: Final answer
    x = 12,667.11

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1.5x scale

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.