Home / 20,699.52-28,571.85-12,201.18

Finding the Fourth Proportional to 20,699.52, 28,571.85 and 12,201.18

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Solution

The fourth proportional to 20,699.52, 28,571.85 and 12,201.18 is: 16,841.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,699.52 : 28,571.85 = 12,201.18 : x
  2. Step 2: Convert to fraction form
    20,699.52/28,571.85 = 12,201.18/x
  3. Step 3: Cross multiply
    20,699.52x = 28,571.85 × 12,201.18
  4. Step 4: Simplify right side
    20,699.52x = 348,610,284.78
  5. Step 5: Solve for x
    x = 348,610,284.78/20,699.52
  6. Step 6: Final answer
    x = 16,841.47

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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.