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Finding the Fourth Proportional to 26,823.60, 40,235.20 and 8,103.60

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Solution

The fourth proportional to 26,823.60, 40,235.20 and 8,103.60 is: 12,155.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,823.60 : 40,235.20 = 8,103.60 : x
  2. Step 2: Convert to fraction form
    26,823.60/40,235.20 = 8,103.60/x
  3. Step 3: Cross multiply
    26,823.60x = 40,235.20 × 8,103.60
  4. Step 4: Simplify right side
    26,823.60x = 326,049,966.72
  5. Step 5: Solve for x
    x = 326,049,966.72/26,823.60
  6. Step 6: Final answer
    x = 12,155.34

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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.