Home / 28,780.48-39,717.84-16,205.68

Finding the Fourth Proportional to 28,780.48, 39,717.84 and 16,205.68

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Solution

The fourth proportional to 28,780.48, 39,717.84 and 16,205.68 is: 22,364.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,780.48 : 39,717.84 = 16,205.68 : x
  2. Step 2: Convert to fraction form
    28,780.48/39,717.84 = 16,205.68/x
  3. Step 3: Cross multiply
    28,780.48x = 39,717.84 × 16,205.68
  4. Step 4: Simplify right side
    28,780.48x = 643,654,605.33
  5. Step 5: Solve for x
    x = 643,654,605.33/28,780.48
  6. Step 6: Final answer
    x = 22,364.28

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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.