Home / 25,878.57-35,712.28-15,805.61

Finding the Fourth Proportional to 25,878.57, 35,712.28 and 15,805.61

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Solution

The fourth proportional to 25,878.57, 35,712.28 and 15,805.61 is: 21,811.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,878.57 : 35,712.28 = 15,805.61 : x
  2. Step 2: Convert to fraction form
    25,878.57/35,712.28 = 15,805.61/x
  3. Step 3: Cross multiply
    25,878.57x = 35,712.28 × 15,805.61
  4. Step 4: Simplify right side
    25,878.57x = 564,454,419.66
  5. Step 5: Solve for x
    x = 564,454,419.66/25,878.57
  6. Step 6: Final answer
    x = 21,811.65

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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.