Home / 11,352.18-15,663.60-7,158

Finding the Fourth Proportional to 11,352.18, 15,663.60 and 7,158

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Solution

The fourth proportional to 11,352.18, 15,663.60 and 7,158 is: 9,876.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,352.18 : 15,663.60 = 7,158 : x
  2. Step 2: Convert to fraction form
    11,352.18/15,663.60 = 7,158/x
  3. Step 3: Cross multiply
    11,352.18x = 15,663.60 × 7,158
  4. Step 4: Simplify right side
    11,352.18x = 112,120,048.80
  5. Step 5: Solve for x
    x = 112,120,048.80/11,352.18
  6. Step 6: Final answer
    x = 9,876.52

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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.