Home / 28,819.18-39,780.39-16,886.38

Finding the Fourth Proportional to 28,819.18, 39,780.39 and 16,886.38

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Solution

The fourth proportional to 28,819.18, 39,780.39 and 16,886.38 is: 23,309.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,819.18 : 39,780.39 = 16,886.38 : x
  2. Step 2: Convert to fraction form
    28,819.18/39,780.39 = 16,886.38/x
  3. Step 3: Cross multiply
    28,819.18x = 39,780.39 × 16,886.38
  4. Step 4: Simplify right side
    28,819.18x = 671,746,782.09
  5. Step 5: Solve for x
    x = 671,746,782.09/28,819.18
  6. Step 6: Final answer
    x = 23,309.02

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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.