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Finding the Fourth Proportional to 28,348.40, 42,524.20 and 8,627.60

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Solution

The fourth proportional to 28,348.40, 42,524.20 and 8,627.60 is: 12,941.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,348.40 : 42,524.20 = 8,627.60 : x
  2. Step 2: Convert to fraction form
    28,348.40/42,524.20 = 8,627.60/x
  3. Step 3: Cross multiply
    28,348.40x = 42,524.20 × 8,627.60
  4. Step 4: Simplify right side
    28,348.40x = 366,881,787.92
  5. Step 5: Solve for x
    x = 366,881,787.92/28,348.40
  6. Step 6: Final answer
    x = 12,941.89

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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.