Home / 31,390.20-43,307.91-17,776.38

Finding the Fourth Proportional to 31,390.20, 43,307.91 and 17,776.38

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Solution

The fourth proportional to 31,390.20, 43,307.91 and 17,776.38 is: 24,525.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,390.20 : 43,307.91 = 17,776.38 : x
  2. Step 2: Convert to fraction form
    31,390.20/43,307.91 = 17,776.38/x
  3. Step 3: Cross multiply
    31,390.20x = 43,307.91 × 17,776.38
  4. Step 4: Simplify right side
    31,390.20x = 769,857,865.17
  5. Step 5: Solve for x
    x = 769,857,865.17/31,390.20
  6. Step 6: Final answer
    x = 24,525.42

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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.