Home / 38,440.32-57,663.84-12,138.24

Finding the Fourth Proportional to 38,440.32, 57,663.84 and 12,138.24

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Solution

The fourth proportional to 38,440.32, 57,663.84 and 12,138.24 is: 18,208.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,440.32 : 57,663.84 = 12,138.24 : x
  2. Step 2: Convert to fraction form
    38,440.32/57,663.84 = 12,138.24/x
  3. Step 3: Cross multiply
    38,440.32x = 57,663.84 × 12,138.24
  4. Step 4: Simplify right side
    38,440.32x = 699,937,529.24
  5. Step 5: Solve for x
    x = 699,937,529.24/38,440.32
  6. Step 6: Final answer
    x = 18,208.42

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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.