Home / 12,858.78-19,274.66-6,275.92

Finding the Fourth Proportional to 12,858.78, 19,274.66 and 6,275.92

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Solution

The fourth proportional to 12,858.78, 19,274.66 and 6,275.92 is: 9,407.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,858.78 : 19,274.66 = 6,275.92 : x
  2. Step 2: Convert to fraction form
    12,858.78/19,274.66 = 6,275.92/x
  3. Step 3: Cross multiply
    12,858.78x = 19,274.66 × 6,275.92
  4. Step 4: Simplify right side
    12,858.78x = 120,966,224.19
  5. Step 5: Solve for x
    x = 120,966,224.19/12,858.78
  6. Step 6: Final answer
    x = 9,407.29

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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.