Home / 28,975.98-39,982.28-16,878.45

Finding the Fourth Proportional to 28,975.98, 39,982.28 and 16,878.45

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Solution

The fourth proportional to 28,975.98, 39,982.28 and 16,878.45 is: 23,289.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,975.98 : 39,982.28 = 16,878.45 : x
  2. Step 2: Convert to fraction form
    28,975.98/39,982.28 = 16,878.45/x
  3. Step 3: Cross multiply
    28,975.98x = 39,982.28 × 16,878.45
  4. Step 4: Simplify right side
    28,975.98x = 674,838,829.47
  5. Step 5: Solve for x
    x = 674,838,829.47/28,975.98
  6. Step 6: Final answer
    x = 23,289.59

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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.