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Finding the Fourth Proportional to 12,223.70, 18,335.55 and 7,846.10

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Solution

The fourth proportional to 12,223.70, 18,335.55 and 7,846.10 is: 11,769.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,223.70 : 18,335.55 = 7,846.10 : x
  2. Step 2: Convert to fraction form
    12,223.70/18,335.55 = 7,846.10/x
  3. Step 3: Cross multiply
    12,223.70x = 18,335.55 × 7,846.10
  4. Step 4: Simplify right side
    12,223.70x = 143,862,558.86
  5. Step 5: Solve for x
    x = 143,862,558.86/12,223.70
  6. Step 6: Final answer
    x = 11,769.15

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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.