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Finding the Fourth Proportional to 25,599.60, 38,400.60 and 8,070.78

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Solution

The fourth proportional to 25,599.60, 38,400.60 and 8,070.78 is: 12,106.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,599.60 : 38,400.60 = 8,070.78 : x
  2. Step 2: Convert to fraction form
    25,599.60/38,400.60 = 8,070.78/x
  3. Step 3: Cross multiply
    25,599.60x = 38,400.60 × 8,070.78
  4. Step 4: Simplify right side
    25,599.60x = 309,922,794.47
  5. Step 5: Solve for x
    x = 309,922,794.47/25,599.60
  6. Step 6: Final answer
    x = 12,106.55

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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.