Home / 20,753.24-28,639.34-11,800.74

Finding the Fourth Proportional to 20,753.24, 28,639.34 and 11,800.74

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Solution

The fourth proportional to 20,753.24, 28,639.34 and 11,800.74 is: 16,284.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,753.24 : 28,639.34 = 11,800.74 : x
  2. Step 2: Convert to fraction form
    20,753.24/28,639.34 = 11,800.74/x
  3. Step 3: Cross multiply
    20,753.24x = 28,639.34 × 11,800.74
  4. Step 4: Simplify right side
    20,753.24x = 337,965,346.11
  5. Step 5: Solve for x
    x = 337,965,346.11/20,753.24
  6. Step 6: Final answer
    x = 16,284.94

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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.