Home / 12,870.26-19,305.58-5,079

Finding the Fourth Proportional to 12,870.26, 19,305.58 and 5,079

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Solution

The fourth proportional to 12,870.26, 19,305.58 and 5,079 is: 7,618.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,870.26 : 19,305.58 = 5,079 : x
  2. Step 2: Convert to fraction form
    12,870.26/19,305.58 = 5,079/x
  3. Step 3: Cross multiply
    12,870.26x = 19,305.58 × 5,079
  4. Step 4: Simplify right side
    12,870.26x = 98,053,040.82
  5. Step 5: Solve for x
    x = 98,053,040.82/12,870.26
  6. Step 6: Final answer
    x = 7,618.57

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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.