Home / 21,308.67-31,964.49-6,516.45

Finding the Fourth Proportional to 21,308.67, 31,964.49 and 6,516.45

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Solution

The fourth proportional to 21,308.67, 31,964.49 and 6,516.45 is: 9,775.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308.67 : 31,964.49 = 6,516.45 : x
  2. Step 2: Convert to fraction form
    21,308.67/31,964.49 = 6,516.45/x
  3. Step 3: Cross multiply
    21,308.67x = 31,964.49 × 6,516.45
  4. Step 4: Simplify right side
    21,308.67x = 208,295,000.86
  5. Step 5: Solve for x
    x = 208,295,000.86/21,308.67
  6. Step 6: Final answer
    x = 9,775.13

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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.