Home / 28,781.80-43,110.20-13,959.56

Finding the Fourth Proportional to 28,781.80, 43,110.20 and 13,959.56

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Solution

The fourth proportional to 28,781.80, 43,110.20 and 13,959.56 is: 20,909.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,781.80 : 43,110.20 = 13,959.56 : x
  2. Step 2: Convert to fraction form
    28,781.80/43,110.20 = 13,959.56/x
  3. Step 3: Cross multiply
    28,781.80x = 43,110.20 × 13,959.56
  4. Step 4: Simplify right side
    28,781.80x = 601,799,566.19
  5. Step 5: Solve for x
    x = 601,799,566.19/28,781.80
  6. Step 6: Final answer
    x = 20,909.03

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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.