Home / 25,724.20-38,528.70-21,116.20

Finding the Fourth Proportional to 25,724.20, 38,528.70 and 21,116.20

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Solution

The fourth proportional to 25,724.20, 38,528.70 and 21,116.20 is: 31,627.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,724.20 : 38,528.70 = 21,116.20 : x
  2. Step 2: Convert to fraction form
    25,724.20/38,528.70 = 21,116.20/x
  3. Step 3: Cross multiply
    25,724.20x = 38,528.70 × 21,116.20
  4. Step 4: Simplify right side
    25,724.20x = 813,579,734.94
  5. Step 5: Solve for x
    x = 813,579,734.94/25,724.20
  6. Step 6: Final answer
    x = 31,627.02

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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.