Home / 31,779.34-43,849.41-18,171.70

Finding the Fourth Proportional to 31,779.34, 43,849.41 and 18,171.70

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Solution

The fourth proportional to 31,779.34, 43,849.41 and 18,171.70 is: 25,073.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,779.34 : 43,849.41 = 18,171.70 : x
  2. Step 2: Convert to fraction form
    31,779.34/43,849.41 = 18,171.70/x
  3. Step 3: Cross multiply
    31,779.34x = 43,849.41 × 18,171.70
  4. Step 4: Simplify right side
    31,779.34x = 796,818,323.70
  5. Step 5: Solve for x
    x = 796,818,323.70/31,779.34
  6. Step 6: Final answer
    x = 25,073.47

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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.