Home / 38,400.11-57,626.10-13,440.36

Finding the Fourth Proportional to 38,400.11, 57,626.10 and 13,440.36

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Solution

The fourth proportional to 38,400.11, 57,626.10 and 13,440.36 is: 20,169.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,400.11 : 57,626.10 = 13,440.36 : x
  2. Step 2: Convert to fraction form
    38,400.11/57,626.10 = 13,440.36/x
  3. Step 3: Cross multiply
    38,400.11x = 57,626.10 × 13,440.36
  4. Step 4: Simplify right side
    38,400.11x = 774,515,529.40
  5. Step 5: Solve for x
    x = 774,515,529.40/38,400.11
  6. Step 6: Final answer
    x = 20,169.62

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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.