Home / 10,345.50-15,519.87-3,421.62

Finding the Fourth Proportional to 10,345.50, 15,519.87 and 3,421.62

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Solution

The fourth proportional to 10,345.50, 15,519.87 and 3,421.62 is: 5,132.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,345.50 : 15,519.87 = 3,421.62 : x
  2. Step 2: Convert to fraction form
    10,345.50/15,519.87 = 3,421.62/x
  3. Step 3: Cross multiply
    10,345.50x = 15,519.87 × 3,421.62
  4. Step 4: Simplify right side
    10,345.50x = 53,103,097.59
  5. Step 5: Solve for x
    x = 53,103,097.59/10,345.50
  6. Step 6: Final answer
    x = 5,132.97

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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.