Home / 21,300.66-31,950.99-6,508.78

Finding the Fourth Proportional to 21,300.66, 31,950.99 and 6,508.78

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Solution

The fourth proportional to 21,300.66, 31,950.99 and 6,508.78 is: 9,763.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,300.66 : 31,950.99 = 6,508.78 : x
  2. Step 2: Convert to fraction form
    21,300.66/31,950.99 = 6,508.78/x
  3. Step 3: Cross multiply
    21,300.66x = 31,950.99 × 6,508.78
  4. Step 4: Simplify right side
    21,300.66x = 207,961,964.69
  5. Step 5: Solve for x
    x = 207,961,964.69/21,300.66
  6. Step 6: Final answer
    x = 9,763.17

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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.