Home / 28,107.20-42,128.34-10,565.84

Finding the Fourth Proportional to 28,107.20, 42,128.34 and 10,565.84

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Solution

The fourth proportional to 28,107.20, 42,128.34 and 10,565.84 is: 15,836.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,107.20 : 42,128.34 = 10,565.84 : x
  2. Step 2: Convert to fraction form
    28,107.20/42,128.34 = 10,565.84/x
  3. Step 3: Cross multiply
    28,107.20x = 42,128.34 × 10,565.84
  4. Step 4: Simplify right side
    28,107.20x = 445,121,299.91
  5. Step 5: Solve for x
    x = 445,121,299.91/28,107.20
  6. Step 6: Final answer
    x = 15,836.56

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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.