Home / 28,842.48-39,780.72-20,910.96

Finding the Fourth Proportional to 28,842.48, 39,780.72 and 20,910.96

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Solution

The fourth proportional to 28,842.48, 39,780.72 and 20,910.96 is: 28,841.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,842.48 : 39,780.72 = 20,910.96 : x
  2. Step 2: Convert to fraction form
    28,842.48/39,780.72 = 20,910.96/x
  3. Step 3: Cross multiply
    28,842.48x = 39,780.72 × 20,910.96
  4. Step 4: Simplify right side
    28,842.48x = 831,853,044.69
  5. Step 5: Solve for x
    x = 831,853,044.69/28,842.48
  6. Step 6: Final answer
    x = 28,841.25

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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.