Home / 15,659.73-21,611.79-8,587.53

Finding the Fourth Proportional to 15,659.73, 21,611.79 and 8,587.53

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Solution

The fourth proportional to 15,659.73, 21,611.79 and 8,587.53 is: 11,851.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,659.73 : 21,611.79 = 8,587.53 : x
  2. Step 2: Convert to fraction form
    15,659.73/21,611.79 = 8,587.53/x
  3. Step 3: Cross multiply
    15,659.73x = 21,611.79 × 8,587.53
  4. Step 4: Simplify right side
    15,659.73x = 185,591,894.98
  5. Step 5: Solve for x
    x = 185,591,894.98/15,659.73
  6. Step 6: Final answer
    x = 11,851.54

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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.