Home / 20,359.57-28,098.51-12,401.77

Finding the Fourth Proportional to 20,359.57, 28,098.51 and 12,401.77

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Solution

The fourth proportional to 20,359.57, 28,098.51 and 12,401.77 is: 17,115.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,359.57 : 28,098.51 = 12,401.77 : x
  2. Step 2: Convert to fraction form
    20,359.57/28,098.51 = 12,401.77/x
  3. Step 3: Cross multiply
    20,359.57x = 28,098.51 × 12,401.77
  4. Step 4: Simplify right side
    20,359.57x = 348,471,251.25
  5. Step 5: Solve for x
    x = 348,471,251.25/20,359.57
  6. Step 6: Final answer
    x = 17,115.85

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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.