Home / 28,763.78-39,684.75-16,186.10

Finding the Fourth Proportional to 28,763.78, 39,684.75 and 16,186.10

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Solution

The fourth proportional to 28,763.78, 39,684.75 and 16,186.10 is: 22,331.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,763.78 : 39,684.75 = 16,186.10 : x
  2. Step 2: Convert to fraction form
    28,763.78/39,684.75 = 16,186.10/x
  3. Step 3: Cross multiply
    28,763.78x = 39,684.75 × 16,186.10
  4. Step 4: Simplify right side
    28,763.78x = 642,341,331.98
  5. Step 5: Solve for x
    x = 642,341,331.98/28,763.78
  6. Step 6: Final answer
    x = 22,331.60

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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.