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Finding the Fourth Proportional to 12,237.95, 18,356.12 and 7,292.09

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Solution

The fourth proportional to 12,237.95, 18,356.12 and 7,292.09 is: 10,937.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,237.95 : 18,356.12 = 7,292.09 : x
  2. Step 2: Convert to fraction form
    12,237.95/18,356.12 = 7,292.09/x
  3. Step 3: Cross multiply
    12,237.95x = 18,356.12 × 7,292.09
  4. Step 4: Simplify right side
    12,237.95x = 133,854,515.87
  5. Step 5: Solve for x
    x = 133,854,515.87/12,237.95
  6. Step 6: Final answer
    x = 10,937.66

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1.5x scale

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.