Home / 28,577.66-39,436.61-15,831.70

Finding the Fourth Proportional to 28,577.66, 39,436.61 and 15,831.70

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Solution

The fourth proportional to 28,577.66, 39,436.61 and 15,831.70 is: 21,847.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,577.66 : 39,436.61 = 15,831.70 : x
  2. Step 2: Convert to fraction form
    28,577.66/39,436.61 = 15,831.70/x
  3. Step 3: Cross multiply
    28,577.66x = 39,436.61 × 15,831.70
  4. Step 4: Simplify right side
    28,577.66x = 624,348,400.79
  5. Step 5: Solve for x
    x = 624,348,400.79/28,577.66
  6. Step 6: Final answer
    x = 21,847.43

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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.