Home / 10,467.78-15,709.77-5,538.66

Finding the Fourth Proportional to 10,467.78, 15,709.77 and 5,538.66

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Solution

The fourth proportional to 10,467.78, 15,709.77 and 5,538.66 is: 8,312.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,467.78 : 15,709.77 = 5,538.66 : x
  2. Step 2: Convert to fraction form
    10,467.78/15,709.77 = 5,538.66/x
  3. Step 3: Cross multiply
    10,467.78x = 15,709.77 × 5,538.66
  4. Step 4: Simplify right side
    10,467.78x = 87,011,074.71
  5. Step 5: Solve for x
    x = 87,011,074.71/10,467.78
  6. Step 6: Final answer
    x = 8,312.28

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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.