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Finding the Fourth Proportional to 12,595.40, 18,876.90 and 11,202.20

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Solution

The fourth proportional to 12,595.40, 18,876.90 and 11,202.20 is: 16,788.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,595.40 : 18,876.90 = 11,202.20 : x
  2. Step 2: Convert to fraction form
    12,595.40/18,876.90 = 11,202.20/x
  3. Step 3: Cross multiply
    12,595.40x = 18,876.90 × 11,202.20
  4. Step 4: Simplify right side
    12,595.40x = 211,462,809.18
  5. Step 5: Solve for x
    x = 211,462,809.18/12,595.40
  6. Step 6: Final answer
    x = 16,788.89

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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.