Home / 10,918.60-15,067.68-6,442.36

Finding the Fourth Proportional to 10,918.60, 15,067.68 and 6,442.36

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Solution

The fourth proportional to 10,918.60, 15,067.68 and 6,442.36 is: 8,890.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,918.60 : 15,067.68 = 6,442.36 : x
  2. Step 2: Convert to fraction form
    10,918.60/15,067.68 = 6,442.36/x
  3. Step 3: Cross multiply
    10,918.60x = 15,067.68 × 6,442.36
  4. Step 4: Simplify right side
    10,918.60x = 97,071,418.92
  5. Step 5: Solve for x
    x = 97,071,418.92/10,918.60
  6. Step 6: Final answer
    x = 8,890.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.