Home / 21,135,443.38-31,693,172.30-8,187,658.18

Finding the Fourth Proportional to 21,135,443.38, 31,693,172.30 and 8,187,658.18

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Solution

The fourth proportional to 21,135,443.38, 31,693,172.30 and 8,187,658.18 is: 12,277,616.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135,443.38 : 31,693,172.30 = 8,187,658.18 : x
  2. Step 2: Convert to fraction form
    21,135,443.38/31,693,172.30 = 8,187,658.18/x
  3. Step 3: Cross multiply
    21,135,443.38x = 31,693,172.30 × 8,187,658.18
  4. Step 4: Simplify right side
    21,135,443.38x = 259,492,861,432,244.41
  5. Step 5: Solve for x
    x = 259,492,861,432,244.41/21,135,443.38
  6. Step 6: Final answer
    x = 12,277,616.17

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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.