Home / 28,839.59-39,800.16-16,906.78

Finding the Fourth Proportional to 28,839.59, 39,800.16 and 16,906.78

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Solution

The fourth proportional to 28,839.59, 39,800.16 and 16,906.78 is: 23,332.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,839.59 : 39,800.16 = 16,906.78 : x
  2. Step 2: Convert to fraction form
    28,839.59/39,800.16 = 16,906.78/x
  3. Step 3: Cross multiply
    28,839.59x = 39,800.16 × 16,906.78
  4. Step 4: Simplify right side
    28,839.59x = 672,892,549.08
  5. Step 5: Solve for x
    x = 672,892,549.08/28,839.59
  6. Step 6: Final answer
    x = 23,332.25

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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.