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Finding the Fourth Proportional to 21,357.44, 31,973.07 and 15,773.70

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Solution

The fourth proportional to 21,357.44, 31,973.07 and 15,773.70 is: 23,613.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,357.44 : 31,973.07 = 15,773.70 : x
  2. Step 2: Convert to fraction form
    21,357.44/31,973.07 = 15,773.70/x
  3. Step 3: Cross multiply
    21,357.44x = 31,973.07 × 15,773.70
  4. Step 4: Simplify right side
    21,357.44x = 504,333,614.26
  5. Step 5: Solve for x
    x = 504,333,614.26/21,357.44
  6. Step 6: Final answer
    x = 23,613.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.