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Finding the Fourth Proportional to 12,356,005.70, 18,534,008.55 and 8,324,927.30

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Solution

The fourth proportional to 12,356,005.70, 18,534,008.55 and 8,324,927.30 is: 12,487,390.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,356,005.70 : 18,534,008.55 = 8,324,927.30 : x
  2. Step 2: Convert to fraction form
    12,356,005.70/18,534,008.55 = 8,324,927.30/x
  3. Step 3: Cross multiply
    12,356,005.70x = 18,534,008.55 × 8,324,927.30
  4. Step 4: Simplify right side
    12,356,005.70x = 154,294,273,756,328.41
  5. Step 5: Solve for x
    x = 154,294,273,756,328.41/12,356,005.70
  6. Step 6: Final answer
    x = 12,487,390.95

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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.