Home / 15,755.20-23,632.80-13,811.20

Finding the Fourth Proportional to 15,755.20, 23,632.80 and 13,811.20

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Solution

The fourth proportional to 15,755.20, 23,632.80 and 13,811.20 is: 20,716.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,755.20 : 23,632.80 = 13,811.20 : x
  2. Step 2: Convert to fraction form
    15,755.20/23,632.80 = 13,811.20/x
  3. Step 3: Cross multiply
    15,755.20x = 23,632.80 × 13,811.20
  4. Step 4: Simplify right side
    15,755.20x = 326,397,327.36
  5. Step 5: Solve for x
    x = 326,397,327.36/15,755.20
  6. Step 6: Final answer
    x = 20,716.80

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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.