Home / 31,996.41-44,145.16-20,672.20

Finding the Fourth Proportional to 31,996.41, 44,145.16 and 20,672.20

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Solution

The fourth proportional to 31,996.41, 44,145.16 and 20,672.20 is: 28,521.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,996.41 : 44,145.16 = 20,672.20 : x
  2. Step 2: Convert to fraction form
    31,996.41/44,145.16 = 20,672.20/x
  3. Step 3: Cross multiply
    31,996.41x = 44,145.16 × 20,672.20
  4. Step 4: Simplify right side
    31,996.41x = 912,577,576.55
  5. Step 5: Solve for x
    x = 912,577,576.55/31,996.41
  6. Step 6: Final answer
    x = 28,521.25

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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.