Home / 38,142.36-57,216.78-10,440.36

Finding the Fourth Proportional to 38,142.36, 57,216.78 and 10,440.36

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Solution

The fourth proportional to 38,142.36, 57,216.78 and 10,440.36 is: 15,661.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,142.36 : 57,216.78 = 10,440.36 : x
  2. Step 2: Convert to fraction form
    38,142.36/57,216.78 = 10,440.36/x
  3. Step 3: Cross multiply
    38,142.36x = 57,216.78 × 10,440.36
  4. Step 4: Simplify right side
    38,142.36x = 597,363,781.24
  5. Step 5: Solve for x
    x = 597,363,781.24/38,142.36
  6. Step 6: Final answer
    x = 15,661.43

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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.