Home / 10,815.87-16,192.17-9,778.26

Finding the Fourth Proportional to 10,815.87, 16,192.17 and 9,778.26

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Solution

The fourth proportional to 10,815.87, 16,192.17 and 9,778.26 is: 14,638.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,815.87 : 16,192.17 = 9,778.26 : x
  2. Step 2: Convert to fraction form
    10,815.87/16,192.17 = 9,778.26/x
  3. Step 3: Cross multiply
    10,815.87x = 16,192.17 × 9,778.26
  4. Step 4: Simplify right side
    10,815.87x = 158,331,248.22
  5. Step 5: Solve for x
    x = 158,331,248.22/10,815.87
  6. Step 6: Final answer
    x = 14,638.79

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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.