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Finding the Fourth Proportional to 28,862.88, 39,831.02 and 16,600.13

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Solution

The fourth proportional to 28,862.88, 39,831.02 and 16,600.13 is: 22,908.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,862.88 : 39,831.02 = 16,600.13 : x
  2. Step 2: Convert to fraction form
    28,862.88/39,831.02 = 16,600.13/x
  3. Step 3: Cross multiply
    28,862.88x = 39,831.02 × 16,600.13
  4. Step 4: Simplify right side
    28,862.88x = 661,200,110.03
  5. Step 5: Solve for x
    x = 661,200,110.03/28,862.88
  6. Step 6: Final answer
    x = 22,908.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.