Home / 31,699.62-43,741.76-18,270.72

Finding the Fourth Proportional to 31,699.62, 43,741.76 and 18,270.72

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Solution

The fourth proportional to 31,699.62, 43,741.76 and 18,270.72 is: 25,211.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,699.62 : 43,741.76 = 18,270.72 : x
  2. Step 2: Convert to fraction form
    31,699.62/43,741.76 = 18,270.72/x
  3. Step 3: Cross multiply
    31,699.62x = 43,741.76 × 18,270.72
  4. Step 4: Simplify right side
    31,699.62x = 799,193,357.91
  5. Step 5: Solve for x
    x = 799,193,357.91/31,699.62
  6. Step 6: Final answer
    x = 25,211.45

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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.