Home / 20,618.56-30,884.01-13,959.15

Finding the Fourth Proportional to 20,618.56, 30,884.01 and 13,959.15

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Solution

The fourth proportional to 20,618.56, 30,884.01 and 13,959.15 is: 20,909.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,618.56 : 30,884.01 = 13,959.15 : x
  2. Step 2: Convert to fraction form
    20,618.56/30,884.01 = 13,959.15/x
  3. Step 3: Cross multiply
    20,618.56x = 30,884.01 × 13,959.15
  4. Step 4: Simplify right side
    20,618.56x = 431,114,528.19
  5. Step 5: Solve for x
    x = 431,114,528.19/20,618.56
  6. Step 6: Final answer
    x = 20,909.05

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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.