Home / 10,898.78-15,042.03-6,650.76

Finding the Fourth Proportional to 10,898.78, 15,042.03 and 6,650.76

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Solution

The fourth proportional to 10,898.78, 15,042.03 and 6,650.76 is: 9,179.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,898.78 : 15,042.03 = 6,650.76 : x
  2. Step 2: Convert to fraction form
    10,898.78/15,042.03 = 6,650.76/x
  3. Step 3: Cross multiply
    10,898.78x = 15,042.03 × 6,650.76
  4. Step 4: Simplify right side
    10,898.78x = 100,040,931.44
  5. Step 5: Solve for x
    x = 100,040,931.44/10,898.78
  6. Step 6: Final answer
    x = 9,179.10

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1.5x scale

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.