Home / 10,688.78-16,031.97-2,898.20

Finding the Fourth Proportional to 10,688.78, 16,031.97 and 2,898.20

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Solution

The fourth proportional to 10,688.78, 16,031.97 and 2,898.20 is: 4,346.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,688.78 : 16,031.97 = 2,898.20 : x
  2. Step 2: Convert to fraction form
    10,688.78/16,031.97 = 2,898.20/x
  3. Step 3: Cross multiply
    10,688.78x = 16,031.97 × 2,898.20
  4. Step 4: Simplify right side
    10,688.78x = 46,463,855.45
  5. Step 5: Solve for x
    x = 46,463,855.45/10,688.78
  6. Step 6: Final answer
    x = 4,346.97

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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.