Home / 12,729.40-19,081.02-5,338.12

Finding the Fourth Proportional to 12,729.40, 19,081.02 and 5,338.12

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Solution

The fourth proportional to 12,729.40, 19,081.02 and 5,338.12 is: 8,001.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,729.40 : 19,081.02 = 5,338.12 : x
  2. Step 2: Convert to fraction form
    12,729.40/19,081.02 = 5,338.12/x
  3. Step 3: Cross multiply
    12,729.40x = 19,081.02 × 5,338.12
  4. Step 4: Simplify right side
    12,729.40x = 101,856,774.48
  5. Step 5: Solve for x
    x = 101,856,774.48/12,729.40
  6. Step 6: Final answer
    x = 8,001.69

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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.