Home / 13,433.60-18,544.20-8,719.40

Finding the Fourth Proportional to 13,433.60, 18,544.20 and 8,719.40

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Solution

The fourth proportional to 13,433.60, 18,544.20 and 8,719.40 is: 12,036.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,433.60 : 18,544.20 = 8,719.40 : x
  2. Step 2: Convert to fraction form
    13,433.60/18,544.20 = 8,719.40/x
  3. Step 3: Cross multiply
    13,433.60x = 18,544.20 × 8,719.40
  4. Step 4: Simplify right side
    13,433.60x = 161,694,297.48
  5. Step 5: Solve for x
    x = 161,694,297.48/13,433.60
  6. Step 6: Final answer
    x = 12,036.56

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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.