Home / 31,203.72-43,033.14-20,604.06

Finding the Fourth Proportional to 31,203.72, 43,033.14 and 20,604.06

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Solution

The fourth proportional to 31,203.72, 43,033.14 and 20,604.06 is: 28,415.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,203.72 : 43,033.14 = 20,604.06 : x
  2. Step 2: Convert to fraction form
    31,203.72/43,033.14 = 20,604.06/x
  3. Step 3: Cross multiply
    31,203.72x = 43,033.14 × 20,604.06
  4. Step 4: Simplify right side
    31,203.72x = 886,657,398.55
  5. Step 5: Solve for x
    x = 886,657,398.55/31,203.72
  6. Step 6: Final answer
    x = 28,415.12

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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.