Home / 10,508.78-15,767.84-5,509.96

Finding the Fourth Proportional to 10,508.78, 15,767.84 and 5,509.96

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Solution

The fourth proportional to 10,508.78, 15,767.84 and 5,509.96 is: 8,267.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,508.78 : 15,767.84 = 5,509.96 : x
  2. Step 2: Convert to fraction form
    10,508.78/15,767.84 = 5,509.96/x
  3. Step 3: Cross multiply
    10,508.78x = 15,767.84 × 5,509.96
  4. Step 4: Simplify right side
    10,508.78x = 86,880,142.04
  5. Step 5: Solve for x
    x = 86,880,142.04/10,508.78
  6. Step 6: Final answer
    x = 8,267.38

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1.5x scale

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.