Home / 22,611.20-31,170.68-15,876.32

Finding the Fourth Proportional to 22,611.20, 31,170.68 and 15,876.32

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Solution

The fourth proportional to 22,611.20, 31,170.68 and 15,876.32 is: 21,886.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,611.20 : 31,170.68 = 15,876.32 : x
  2. Step 2: Convert to fraction form
    22,611.20/31,170.68 = 15,876.32/x
  3. Step 3: Cross multiply
    22,611.20x = 31,170.68 × 15,876.32
  4. Step 4: Simplify right side
    22,611.20x = 494,875,690.30
  5. Step 5: Solve for x
    x = 494,875,690.30/22,611.20
  6. Step 6: Final answer
    x = 21,886.31

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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.