Home / 25,981.28-38,891.44-21,009.44

Finding the Fourth Proportional to 25,981.28, 38,891.44 and 21,009.44

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Solution

The fourth proportional to 25,981.28, 38,891.44 and 21,009.44 is: 31,449.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,981.28 : 38,891.44 = 21,009.44 : x
  2. Step 2: Convert to fraction form
    25,981.28/38,891.44 = 21,009.44/x
  3. Step 3: Cross multiply
    25,981.28x = 38,891.44 × 21,009.44
  4. Step 4: Simplify right side
    25,981.28x = 817,087,375.19
  5. Step 5: Solve for x
    x = 817,087,375.19/25,981.28
  6. Step 6: Final answer
    x = 31,449.08

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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.