Home / 31,677.11-43,695.36-20,922.08

Finding the Fourth Proportional to 31,677.11, 43,695.36 and 20,922.08

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Solution

The fourth proportional to 31,677.11, 43,695.36 and 20,922.08 is: 28,859.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,677.11 : 43,695.36 = 20,922.08 : x
  2. Step 2: Convert to fraction form
    31,677.11/43,695.36 = 20,922.08/x
  3. Step 3: Cross multiply
    31,677.11x = 43,695.36 × 20,922.08
  4. Step 4: Simplify right side
    31,677.11x = 914,197,817.55
  5. Step 5: Solve for x
    x = 914,197,817.55/31,677.11
  6. Step 6: Final answer
    x = 28,859.89

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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.