Home / 18,669.12-28,003.67-10,872.46

Finding the Fourth Proportional to 18,669.12, 28,003.67 and 10,872.46

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Solution

The fourth proportional to 18,669.12, 28,003.67 and 10,872.46 is: 16,308.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,669.12 : 28,003.67 = 10,872.46 : x
  2. Step 2: Convert to fraction form
    18,669.12/28,003.67 = 10,872.46/x
  3. Step 3: Cross multiply
    18,669.12x = 28,003.67 × 10,872.46
  4. Step 4: Simplify right side
    18,669.12x = 304,468,803.34
  5. Step 5: Solve for x
    x = 304,468,803.34/18,669.12
  6. Step 6: Final answer
    x = 16,308.69

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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.