Home / 28,677.78-39,581.19-16,578.81

Finding the Fourth Proportional to 28,677.78, 39,581.19 and 16,578.81

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Solution

The fourth proportional to 28,677.78, 39,581.19 and 16,578.81 is: 22,882.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,677.78 : 39,581.19 = 16,578.81 : x
  2. Step 2: Convert to fraction form
    28,677.78/39,581.19 = 16,578.81/x
  3. Step 3: Cross multiply
    28,677.78x = 39,581.19 × 16,578.81
  4. Step 4: Simplify right side
    28,677.78x = 656,209,028.58
  5. Step 5: Solve for x
    x = 656,209,028.58/28,677.78
  6. Step 6: Final answer
    x = 22,882.14

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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.