Home / 39,138.16-54,003.80-22,142.32

Finding the Fourth Proportional to 39,138.16, 54,003.80 and 22,142.32

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Solution

The fourth proportional to 39,138.16, 54,003.80 and 22,142.32 is: 30,552.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,138.16 : 54,003.80 = 22,142.32 : x
  2. Step 2: Convert to fraction form
    39,138.16/54,003.80 = 22,142.32/x
  3. Step 3: Cross multiply
    39,138.16x = 54,003.80 × 22,142.32
  4. Step 4: Simplify right side
    39,138.16x = 1,195,769,420.82
  5. Step 5: Solve for x
    x = 1,195,769,420.82/39,138.16
  6. Step 6: Final answer
    x = 30,552.52

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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.