Home / 12,862.90-19,298.40-6,289.75

Finding the Fourth Proportional to 12,862.90, 19,298.40 and 6,289.75

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Solution

The fourth proportional to 12,862.90, 19,298.40 and 6,289.75 is: 9,436.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,862.90 : 19,298.40 = 6,289.75 : x
  2. Step 2: Convert to fraction form
    12,862.90/19,298.40 = 6,289.75/x
  3. Step 3: Cross multiply
    12,862.90x = 19,298.40 × 6,289.75
  4. Step 4: Simplify right side
    12,862.90x = 121,382,111.40
  5. Step 5: Solve for x
    x = 121,382,111.40/12,862.90
  6. Step 6: Final answer
    x = 9,436.61

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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.