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Finding the Fourth Proportional to 28,062.07, 42,100.04 and 8,340.60

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Solution

The fourth proportional to 28,062.07, 42,100.04 and 8,340.60 is: 12,512.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,062.07 : 42,100.04 = 8,340.60 : x
  2. Step 2: Convert to fraction form
    28,062.07/42,100.04 = 8,340.60/x
  3. Step 3: Cross multiply
    28,062.07x = 42,100.04 × 8,340.60
  4. Step 4: Simplify right side
    28,062.07x = 351,139,593.62
  5. Step 5: Solve for x
    x = 351,139,593.62/28,062.07
  6. Step 6: Final answer
    x = 12,512.96

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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.