Home / 28,315.18-42,480-10,775.44

Finding the Fourth Proportional to 28,315.18, 42,480 and 10,775.44

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Solution

The fourth proportional to 28,315.18, 42,480 and 10,775.44 is: 16,165.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,315.18 : 42,480 = 10,775.44 : x
  2. Step 2: Convert to fraction form
    28,315.18/42,480 = 10,775.44/x
  3. Step 3: Cross multiply
    28,315.18x = 42,480 × 10,775.44
  4. Step 4: Simplify right side
    28,315.18x = 457,740,691.20
  5. Step 5: Solve for x
    x = 457,740,691.20/28,315.18
  6. Step 6: Final answer
    x = 16,165.91

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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.