Home / 28,878.02-39,849.11-16,129.48

Finding the Fourth Proportional to 28,878.02, 39,849.11 and 16,129.48

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Solution

The fourth proportional to 28,878.02, 39,849.11 and 16,129.48 is: 22,257.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,878.02 : 39,849.11 = 16,129.48 : x
  2. Step 2: Convert to fraction form
    28,878.02/39,849.11 = 16,129.48/x
  3. Step 3: Cross multiply
    28,878.02x = 39,849.11 × 16,129.48
  4. Step 4: Simplify right side
    28,878.02x = 642,745,468.42
  5. Step 5: Solve for x
    x = 642,745,468.42/28,878.02
  6. Step 6: Final answer
    x = 22,257.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.