Home / 21,135,445.38-31,693,175.30-8,187,660.18

Finding the Fourth Proportional to 21,135,445.38, 31,693,175.30 and 8,187,660.18

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Solution

The fourth proportional to 21,135,445.38, 31,693,175.30 and 8,187,660.18 is: 12,277,619.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135,445.38 : 31,693,175.30 = 8,187,660.18 : x
  2. Step 2: Convert to fraction form
    21,135,445.38/31,693,175.30 = 8,187,660.18/x
  3. Step 3: Cross multiply
    21,135,445.38x = 31,693,175.30 × 8,187,660.18
  4. Step 4: Simplify right side
    21,135,445.38x = 259,492,949,381,569.56
  5. Step 5: Solve for x
    x = 259,492,949,381,569.56/21,135,445.38
  6. Step 6: Final answer
    x = 12,277,619.17

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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.