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Finding the Fourth Proportional to 13,362.30, 20,043.45 and 11,248.20

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Solution

The fourth proportional to 13,362.30, 20,043.45 and 11,248.20 is: 16,872.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,362.30 : 20,043.45 = 11,248.20 : x
  2. Step 2: Convert to fraction form
    13,362.30/20,043.45 = 11,248.20/x
  3. Step 3: Cross multiply
    13,362.30x = 20,043.45 × 11,248.20
  4. Step 4: Simplify right side
    13,362.30x = 225,452,734.29
  5. Step 5: Solve for x
    x = 225,452,734.29/13,362.30
  6. Step 6: Final answer
    x = 16,872.30

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1.5x scale

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.