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Finding the Fourth Proportional to 12,868.12, 19,305.02 and 7,324.08

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Solution

The fourth proportional to 12,868.12, 19,305.02 and 7,324.08 is: 10,987.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,868.12 : 19,305.02 = 7,324.08 : x
  2. Step 2: Convert to fraction form
    12,868.12/19,305.02 = 7,324.08/x
  3. Step 3: Cross multiply
    12,868.12x = 19,305.02 × 7,324.08
  4. Step 4: Simplify right side
    12,868.12x = 141,391,510.88
  5. Step 5: Solve for x
    x = 141,391,510.88/12,868.12
  6. Step 6: Final answer
    x = 10,987.74

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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.