Home / 11,890.61-17,807.56-7,133.48

Finding the Fourth Proportional to 11,890.61, 17,807.56 and 7,133.48

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Solution

The fourth proportional to 11,890.61, 17,807.56 and 7,133.48 is: 10,683.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,890.61 : 17,807.56 = 7,133.48 : x
  2. Step 2: Convert to fraction form
    11,890.61/17,807.56 = 7,133.48/x
  3. Step 3: Cross multiply
    11,890.61x = 17,807.56 × 7,133.48
  4. Step 4: Simplify right side
    11,890.61x = 127,029,766.24
  5. Step 5: Solve for x
    x = 127,029,766.24/11,890.61
  6. Step 6: Final answer
    x = 10,683.20

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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.