Home / 36,138.32-54,231.28-12,763.92

Finding the Fourth Proportional to 36,138.32, 54,231.28 and 12,763.92

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Solution

The fourth proportional to 36,138.32, 54,231.28 and 12,763.92 is: 19,154.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,138.32 : 54,231.28 = 12,763.92 : x
  2. Step 2: Convert to fraction form
    36,138.32/54,231.28 = 12,763.92/x
  3. Step 3: Cross multiply
    36,138.32x = 54,231.28 × 12,763.92
  4. Step 4: Simplify right side
    36,138.32x = 692,203,719.42
  5. Step 5: Solve for x
    x = 692,203,719.42/36,138.32
  6. Step 6: Final answer
    x = 19,154.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.