Home / 28,920.60-39,910.14-16,173.63

Finding the Fourth Proportional to 28,920.60, 39,910.14 and 16,173.63

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Solution

The fourth proportional to 28,920.60, 39,910.14 and 16,173.63 is: 22,319.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,920.60 : 39,910.14 = 16,173.63 : x
  2. Step 2: Convert to fraction form
    28,920.60/39,910.14 = 16,173.63/x
  3. Step 3: Cross multiply
    28,920.60x = 39,910.14 × 16,173.63
  4. Step 4: Simplify right side
    28,920.60x = 645,491,937.38
  5. Step 5: Solve for x
    x = 645,491,937.38/28,920.60
  6. Step 6: Final answer
    x = 22,319.46

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1.5x scale

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.