Home / 10,815.72-14,918.82-6,616.68

Finding the Fourth Proportional to 10,815.72, 14,918.82 and 6,616.68

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Solution

The fourth proportional to 10,815.72, 14,918.82 and 6,616.68 is: 9,126.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,815.72 : 14,918.82 = 6,616.68 : x
  2. Step 2: Convert to fraction form
    10,815.72/14,918.82 = 6,616.68/x
  3. Step 3: Cross multiply
    10,815.72x = 14,918.82 × 6,616.68
  4. Step 4: Simplify right side
    10,815.72x = 98,713,057.92
  5. Step 5: Solve for x
    x = 98,713,057.92/10,815.72
  6. Step 6: Final answer
    x = 9,126.81

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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.