Home / 15,433.60-21,297.16-8,719.88

Finding the Fourth Proportional to 15,433.60, 21,297.16 and 8,719.88

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Solution

The fourth proportional to 15,433.60, 21,297.16 and 8,719.88 is: 12,032.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,433.60 : 21,297.16 = 8,719.88 : x
  2. Step 2: Convert to fraction form
    15,433.60/21,297.16 = 8,719.88/x
  3. Step 3: Cross multiply
    15,433.60x = 21,297.16 × 8,719.88
  4. Step 4: Simplify right side
    15,433.60x = 185,708,679.54
  5. Step 5: Solve for x
    x = 185,708,679.54/15,433.60
  6. Step 6: Final answer
    x = 12,032.75

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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.