Home / 10,920.90-16,379.77-5,372.76

Finding the Fourth Proportional to 10,920.90, 16,379.77 and 5,372.76

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Solution

The fourth proportional to 10,920.90, 16,379.77 and 5,372.76 is: 8,058.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,920.90 : 16,379.77 = 5,372.76 : x
  2. Step 2: Convert to fraction form
    10,920.90/16,379.77 = 5,372.76/x
  3. Step 3: Cross multiply
    10,920.90x = 16,379.77 × 5,372.76
  4. Step 4: Simplify right side
    10,920.90x = 88,004,573.07
  5. Step 5: Solve for x
    x = 88,004,573.07/10,920.90
  6. Step 6: Final answer
    x = 8,058.36

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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.