Home / 10,800.15-16,163.64-6,642.79

Finding the Fourth Proportional to 10,800.15, 16,163.64 and 6,642.79

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Solution

The fourth proportional to 10,800.15, 16,163.64 and 6,642.79 is: 9,941.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,800.15 : 16,163.64 = 6,642.79 : x
  2. Step 2: Convert to fraction form
    10,800.15/16,163.64 = 6,642.79/x
  3. Step 3: Cross multiply
    10,800.15x = 16,163.64 × 6,642.79
  4. Step 4: Simplify right side
    10,800.15x = 107,371,666.16
  5. Step 5: Solve for x
    x = 107,371,666.16/10,800.15
  6. Step 6: Final answer
    x = 9,941.68

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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.