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Finding the Fourth Proportional to 27,280.80, 40,903.38 and 12,469.14

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Solution

The fourth proportional to 27,280.80, 40,903.38 and 12,469.14 is: 18,695.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,280.80 : 40,903.38 = 12,469.14 : x
  2. Step 2: Convert to fraction form
    27,280.80/40,903.38 = 12,469.14/x
  3. Step 3: Cross multiply
    27,280.80x = 40,903.38 × 12,469.14
  4. Step 4: Simplify right side
    27,280.80x = 510,029,971.69
  5. Step 5: Solve for x
    x = 510,029,971.69/27,280.80
  6. Step 6: Final answer
    x = 18,695.57

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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.