Home / 10,155.16-15,231.16-3,918.09

Finding the Fourth Proportional to 10,155.16, 15,231.16 and 3,918.09

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Solution

The fourth proportional to 10,155.16, 15,231.16 and 3,918.09 is: 5,876.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,155.16 : 15,231.16 = 3,918.09 : x
  2. Step 2: Convert to fraction form
    10,155.16/15,231.16 = 3,918.09/x
  3. Step 3: Cross multiply
    10,155.16x = 15,231.16 × 3,918.09
  4. Step 4: Simplify right side
    10,155.16x = 59,677,036.09
  5. Step 5: Solve for x
    x = 59,677,036.09/10,155.16
  6. Step 6: Final answer
    x = 5,876.53

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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.