Home / 10,860.66-14,991.57-6,609.78

Finding the Fourth Proportional to 10,860.66, 14,991.57 and 6,609.78

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Solution

The fourth proportional to 10,860.66, 14,991.57 and 6,609.78 is: 9,123.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,860.66 : 14,991.57 = 6,609.78 : x
  2. Step 2: Convert to fraction form
    10,860.66/14,991.57 = 6,609.78/x
  3. Step 3: Cross multiply
    10,860.66x = 14,991.57 × 6,609.78
  4. Step 4: Simplify right side
    10,860.66x = 99,090,979.55
  5. Step 5: Solve for x
    x = 99,090,979.55/10,860.66
  6. Step 6: Final answer
    x = 9,123.85

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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.