Home / 31,315.14-43,216.74-17,890.61

Finding the Fourth Proportional to 31,315.14, 43,216.74 and 17,890.61

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Solution

The fourth proportional to 31,315.14, 43,216.74 and 17,890.61 is: 24,690.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,315.14 : 43,216.74 = 17,890.61 : x
  2. Step 2: Convert to fraction form
    31,315.14/43,216.74 = 17,890.61/x
  3. Step 3: Cross multiply
    31,315.14x = 43,216.74 × 17,890.61
  4. Step 4: Simplify right side
    31,315.14x = 773,173,624.73
  5. Step 5: Solve for x
    x = 773,173,624.73/31,315.14
  6. Step 6: Final answer
    x = 24,690.09

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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.