Home / 15,660.96-21,612.06-8,587.44

Finding the Fourth Proportional to 15,660.96, 21,612.06 and 8,587.44

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Solution

The fourth proportional to 15,660.96, 21,612.06 and 8,587.44 is: 11,850.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,660.96 : 21,612.06 = 8,587.44 : x
  2. Step 2: Convert to fraction form
    15,660.96/21,612.06 = 8,587.44/x
  3. Step 3: Cross multiply
    15,660.96x = 21,612.06 × 8,587.44
  4. Step 4: Simplify right side
    15,660.96x = 185,592,268.53
  5. Step 5: Solve for x
    x = 185,592,268.53/15,660.96
  6. Step 6: Final answer
    x = 11,850.63

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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.