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Finding the Fourth Proportional to 27,280.48, 40,912.80 and 9,740.80

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Solution

The fourth proportional to 27,280.48, 40,912.80 and 9,740.80 is: 14,608.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,280.48 : 40,912.80 = 9,740.80 : x
  2. Step 2: Convert to fraction form
    27,280.48/40,912.80 = 9,740.80/x
  3. Step 3: Cross multiply
    27,280.48x = 40,912.80 × 9,740.80
  4. Step 4: Simplify right side
    27,280.48x = 398,523,402.24
  5. Step 5: Solve for x
    x = 398,523,402.24/27,280.48
  6. Step 6: Final answer
    x = 14,608.37

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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.