Home / 40,143.34-55,397.88-21,993.66

Finding the Fourth Proportional to 40,143.34, 55,397.88 and 21,993.66

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Solution

The fourth proportional to 40,143.34, 55,397.88 and 21,993.66 is: 30,351.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,143.34 : 55,397.88 = 21,993.66 : x
  2. Step 2: Convert to fraction form
    40,143.34/55,397.88 = 21,993.66/x
  3. Step 3: Cross multiply
    40,143.34x = 55,397.88 × 21,993.66
  4. Step 4: Simplify right side
    40,143.34x = 1,218,402,137.44
  5. Step 5: Solve for x
    x = 1,218,402,137.44/40,143.34
  6. Step 6: Final answer
    x = 30,351.29

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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.