Home / 20,886.20-28,822.99-11,454.82

Finding the Fourth Proportional to 20,886.20, 28,822.99 and 11,454.82

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Solution

The fourth proportional to 20,886.20, 28,822.99 and 11,454.82 is: 15,807.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,886.20 : 28,822.99 = 11,454.82 : x
  2. Step 2: Convert to fraction form
    20,886.20/28,822.99 = 11,454.82/x
  3. Step 3: Cross multiply
    20,886.20x = 28,822.99 × 11,454.82
  4. Step 4: Simplify right side
    20,886.20x = 330,162,162.31
  5. Step 5: Solve for x
    x = 330,162,162.31/20,886.20
  6. Step 6: Final answer
    x = 15,807.67

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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.