Home / 28,575.05-42,841.80-11,939.84

Finding the Fourth Proportional to 28,575.05, 42,841.80 and 11,939.84

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Solution

The fourth proportional to 28,575.05, 42,841.80 and 11,939.84 is: 17,901.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,575.05 : 42,841.80 = 11,939.84 : x
  2. Step 2: Convert to fraction form
    28,575.05/42,841.80 = 11,939.84/x
  3. Step 3: Cross multiply
    28,575.05x = 42,841.80 × 11,939.84
  4. Step 4: Simplify right side
    28,575.05x = 511,524,183.76
  5. Step 5: Solve for x
    x = 511,524,183.76/28,575.05
  6. Step 6: Final answer
    x = 17,901.08

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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.