Home / 10,342.50-15,515.91-4,186.50

Finding the Fourth Proportional to 10,342.50, 15,515.91 and 4,186.50

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Solution

The fourth proportional to 10,342.50, 15,515.91 and 4,186.50 is: 6,280.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,342.50 : 15,515.91 = 4,186.50 : x
  2. Step 2: Convert to fraction form
    10,342.50/15,515.91 = 4,186.50/x
  3. Step 3: Cross multiply
    10,342.50x = 15,515.91 × 4,186.50
  4. Step 4: Simplify right side
    10,342.50x = 64,957,357.22
  5. Step 5: Solve for x
    x = 64,957,357.22/10,342.50
  6. Step 6: Final answer
    x = 6,280.62

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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.