Home / 31,450.12-43,401.16-18,874.88

Finding the Fourth Proportional to 31,450.12, 43,401.16 and 18,874.88

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Solution

The fourth proportional to 31,450.12, 43,401.16 and 18,874.88 is: 26,047.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,450.12 : 43,401.16 = 18,874.88 : x
  2. Step 2: Convert to fraction form
    31,450.12/43,401.16 = 18,874.88/x
  3. Step 3: Cross multiply
    31,450.12x = 43,401.16 × 18,874.88
  4. Step 4: Simplify right side
    31,450.12x = 819,191,686.86
  5. Step 5: Solve for x
    x = 819,191,686.86/31,450.12
  6. Step 6: Final answer
    x = 26,047.33

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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.