Home / 15,660.46-21,611.40-8,587.34

Finding the Fourth Proportional to 15,660.46, 21,611.40 and 8,587.34

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Solution

The fourth proportional to 15,660.46, 21,611.40 and 8,587.34 is: 11,850.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,660.46 : 21,611.40 = 8,587.34 : x
  2. Step 2: Convert to fraction form
    15,660.46/21,611.40 = 8,587.34/x
  3. Step 3: Cross multiply
    15,660.46x = 21,611.40 × 8,587.34
  4. Step 4: Simplify right side
    15,660.46x = 185,584,331.62
  5. Step 5: Solve for x
    x = 185,584,331.62/15,660.46
  6. Step 6: Final answer
    x = 11,850.51

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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.