Home / 28,780.70-39,717.30-16,205.48

Finding the Fourth Proportional to 28,780.70, 39,717.30 and 16,205.48

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Solution

The fourth proportional to 28,780.70, 39,717.30 and 16,205.48 is: 22,363.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,780.70 : 39,717.30 = 16,205.48 : x
  2. Step 2: Convert to fraction form
    28,780.70/39,717.30 = 16,205.48/x
  3. Step 3: Cross multiply
    28,780.70x = 39,717.30 × 16,205.48
  4. Step 4: Simplify right side
    28,780.70x = 643,637,910.80
  5. Step 5: Solve for x
    x = 643,637,910.80/28,780.70
  6. Step 6: Final answer
    x = 22,363.53

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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.