Home / 25,680.34-35,449.78-15,611.99

Finding the Fourth Proportional to 25,680.34, 35,449.78 and 15,611.99

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Solution

The fourth proportional to 25,680.34, 35,449.78 and 15,611.99 is: 21,551.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,680.34 : 35,449.78 = 15,611.99 : x
  2. Step 2: Convert to fraction form
    25,680.34/35,449.78 = 15,611.99/x
  3. Step 3: Cross multiply
    25,680.34x = 35,449.78 × 15,611.99
  4. Step 4: Simplify right side
    25,680.34x = 553,441,660.46
  5. Step 5: Solve for x
    x = 553,441,660.46/25,680.34
  6. Step 6: Final answer
    x = 21,551.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.