Home / 28,831.68-39,778.56-16,891.20

Finding the Fourth Proportional to 28,831.68, 39,778.56 and 16,891.20

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Solution

The fourth proportional to 28,831.68, 39,778.56 and 16,891.20 is: 23,304.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,831.68 : 39,778.56 = 16,891.20 : x
  2. Step 2: Convert to fraction form
    28,831.68/39,778.56 = 16,891.20/x
  3. Step 3: Cross multiply
    28,831.68x = 39,778.56 × 16,891.20
  4. Step 4: Simplify right side
    28,831.68x = 671,907,612.67
  5. Step 5: Solve for x
    x = 671,907,612.67/28,831.68
  6. Step 6: Final answer
    x = 23,304.49

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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.