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Finding the Fourth Proportional to 27,220.43, 40,831.05 and 9,689.80

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Solution

The fourth proportional to 27,220.43, 40,831.05 and 9,689.80 is: 14,534.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,220.43 : 40,831.05 = 9,689.80 : x
  2. Step 2: Convert to fraction form
    27,220.43/40,831.05 = 9,689.80/x
  3. Step 3: Cross multiply
    27,220.43x = 40,831.05 × 9,689.80
  4. Step 4: Simplify right side
    27,220.43x = 395,644,708.29
  5. Step 5: Solve for x
    x = 395,644,708.29/27,220.43
  6. Step 6: Final answer
    x = 14,534.84

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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.