Home / 20,826.90-31,226.50-11,471.32

Finding the Fourth Proportional to 20,826.90, 31,226.50 and 11,471.32

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Solution

The fourth proportional to 20,826.90, 31,226.50 and 11,471.32 is: 17,199.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,826.90 : 31,226.50 = 11,471.32 : x
  2. Step 2: Convert to fraction form
    20,826.90/31,226.50 = 11,471.32/x
  3. Step 3: Cross multiply
    20,826.90x = 31,226.50 × 11,471.32
  4. Step 4: Simplify right side
    20,826.90x = 358,209,145.30
  5. Step 5: Solve for x
    x = 358,209,145.30/20,826.90
  6. Step 6: Final answer
    x = 17,199.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.