Home / 21,300.30-31,950.45-8,818.62

Finding the Fourth Proportional to 21,300.30, 31,950.45 and 8,818.62

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Solution

The fourth proportional to 21,300.30, 31,950.45 and 8,818.62 is: 13,227.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,300.30 : 31,950.45 = 8,818.62 : x
  2. Step 2: Convert to fraction form
    21,300.30/31,950.45 = 8,818.62/x
  3. Step 3: Cross multiply
    21,300.30x = 31,950.45 × 8,818.62
  4. Step 4: Simplify right side
    21,300.30x = 281,758,877.38
  5. Step 5: Solve for x
    x = 281,758,877.38/21,300.30
  6. Step 6: Final answer
    x = 13,227.93

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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.