Home / 28,145.99-42,207.31-10,377.66

Finding the Fourth Proportional to 28,145.99, 42,207.31 and 10,377.66

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Solution

The fourth proportional to 28,145.99, 42,207.31 and 10,377.66 is: 15,562.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,145.99 : 42,207.31 = 10,377.66 : x
  2. Step 2: Convert to fraction form
    28,145.99/42,207.31 = 10,377.66/x
  3. Step 3: Cross multiply
    28,145.99x = 42,207.31 × 10,377.66
  4. Step 4: Simplify right side
    28,145.99x = 438,013,112.69
  5. Step 5: Solve for x
    x = 438,013,112.69/28,145.99
  6. Step 6: Final answer
    x = 15,562.19

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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.