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Finding the Fourth Proportional to 26,848.60, 40,272.70 and 8,128.60

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Solution

The fourth proportional to 26,848.60, 40,272.70 and 8,128.60 is: 12,192.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,848.60 : 40,272.70 = 8,128.60 : x
  2. Step 2: Convert to fraction form
    26,848.60/40,272.70 = 8,128.60/x
  3. Step 3: Cross multiply
    26,848.60x = 40,272.70 × 8,128.60
  4. Step 4: Simplify right side
    26,848.60x = 327,360,669.22
  5. Step 5: Solve for x
    x = 327,360,669.22/26,848.60
  6. Step 6: Final answer
    x = 12,192.84

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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.