Home / 31,393.99-43,304.49-18,638.52

Finding the Fourth Proportional to 31,393.99, 43,304.49 and 18,638.52

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Solution

The fourth proportional to 31,393.99, 43,304.49 and 18,638.52 is: 25,709.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,393.99 : 43,304.49 = 18,638.52 : x
  2. Step 2: Convert to fraction form
    31,393.99/43,304.49 = 18,638.52/x
  3. Step 3: Cross multiply
    31,393.99x = 43,304.49 × 18,638.52
  4. Step 4: Simplify right side
    31,393.99x = 807,131,602.95
  5. Step 5: Solve for x
    x = 807,131,602.95/31,393.99
  6. Step 6: Final answer
    x = 25,709.75

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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.