Home / 31,378.50-43,302.33-17,231.58

Finding the Fourth Proportional to 31,378.50, 43,302.33 and 17,231.58

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Solution

The fourth proportional to 31,378.50, 43,302.33 and 17,231.58 is: 23,779.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,378.50 : 43,302.33 = 17,231.58 : x
  2. Step 2: Convert to fraction form
    31,378.50/43,302.33 = 17,231.58/x
  3. Step 3: Cross multiply
    31,378.50x = 43,302.33 × 17,231.58
  4. Step 4: Simplify right side
    31,378.50x = 746,167,563.58
  5. Step 5: Solve for x
    x = 746,167,563.58/31,378.50
  6. Step 6: Final answer
    x = 23,779.58

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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.