Home / 31,713.70-43,630.77-30,838.90

Finding the Fourth Proportional to 31,713.70, 43,630.77 and 30,838.90

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Solution

The fourth proportional to 31,713.70, 43,630.77 and 30,838.90 is: 42,427.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,713.70 : 43,630.77 = 30,838.90 : x
  2. Step 2: Convert to fraction form
    31,713.70/43,630.77 = 30,838.90/x
  3. Step 3: Cross multiply
    31,713.70x = 43,630.77 × 30,838.90
  4. Step 4: Simplify right side
    31,713.70x = 1,345,524,952.95
  5. Step 5: Solve for x
    x = 1,345,524,952.95/31,713.70
  6. Step 6: Final answer
    x = 42,427.25

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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.