Home / 31,135.08-42,950.82-18,550.92

Finding the Fourth Proportional to 31,135.08, 42,950.82 and 18,550.92

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Solution

The fourth proportional to 31,135.08, 42,950.82 and 18,550.92 is: 25,590.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,135.08 : 42,950.82 = 18,550.92 : x
  2. Step 2: Convert to fraction form
    31,135.08/42,950.82 = 18,550.92/x
  3. Step 3: Cross multiply
    31,135.08x = 42,950.82 × 18,550.92
  4. Step 4: Simplify right side
    31,135.08x = 796,777,225.75
  5. Step 5: Solve for x
    x = 796,777,225.75/31,135.08
  6. Step 6: Final answer
    x = 25,590.98

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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.