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Finding the Fourth Proportional to 26,625.60, 39,931.20 and 7,905.60

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Solution

The fourth proportional to 26,625.60, 39,931.20 and 7,905.60 is: 11,856.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,625.60 : 39,931.20 = 7,905.60 : x
  2. Step 2: Convert to fraction form
    26,625.60/39,931.20 = 7,905.60/x
  3. Step 3: Cross multiply
    26,625.60x = 39,931.20 × 7,905.60
  4. Step 4: Simplify right side
    26,625.60x = 315,680,094.72
  5. Step 5: Solve for x
    x = 315,680,094.72/26,625.60
  6. Step 6: Final answer
    x = 11,856.26

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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.