Home / 21,306.48-31,958.51-6,515.38

Finding the Fourth Proportional to 21,306.48, 31,958.51 and 6,515.38

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Solution

The fourth proportional to 21,306.48, 31,958.51 and 6,515.38 is: 9,772.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,306.48 : 31,958.51 = 6,515.38 : x
  2. Step 2: Convert to fraction form
    21,306.48/31,958.51 = 6,515.38/x
  3. Step 3: Cross multiply
    21,306.48x = 31,958.51 × 6,515.38
  4. Step 4: Simplify right side
    21,306.48x = 208,221,836.88
  5. Step 5: Solve for x
    x = 208,221,836.88/21,306.48
  6. Step 6: Final answer
    x = 9,772.70

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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.