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Finding the Fourth Proportional to 40,426.90, 60,629.55 and 12,346.90

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Solution

The fourth proportional to 40,426.90, 60,629.55 and 12,346.90 is: 18,517.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,426.90 : 60,629.55 = 12,346.90 : x
  2. Step 2: Convert to fraction form
    40,426.90/60,629.55 = 12,346.90/x
  3. Step 3: Cross multiply
    40,426.90x = 60,629.55 × 12,346.90
  4. Step 4: Simplify right side
    40,426.90x = 748,586,990.90
  5. Step 5: Solve for x
    x = 748,586,990.90/40,426.90
  6. Step 6: Final answer
    x = 18,517.05

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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.