Home / 21,297.66-31,952.64-8,815.38

Finding the Fourth Proportional to 21,297.66, 31,952.64 and 8,815.38

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Solution

The fourth proportional to 21,297.66, 31,952.64 and 8,815.38 is: 13,225.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,297.66 : 31,952.64 = 8,815.38 : x
  2. Step 2: Convert to fraction form
    21,297.66/31,952.64 = 8,815.38/x
  3. Step 3: Cross multiply
    21,297.66x = 31,952.64 × 8,815.38
  4. Step 4: Simplify right side
    21,297.66x = 281,674,663.60
  5. Step 5: Solve for x
    x = 281,674,663.60/21,297.66
  6. Step 6: Final answer
    x = 13,225.62

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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.