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Finding the Fourth Proportional to 13,813.01, 20,719.66 and 7,569.62

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Solution

The fourth proportional to 13,813.01, 20,719.66 and 7,569.62 is: 11,354.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,813.01 : 20,719.66 = 7,569.62 : x
  2. Step 2: Convert to fraction form
    13,813.01/20,719.66 = 7,569.62/x
  3. Step 3: Cross multiply
    13,813.01x = 20,719.66 × 7,569.62
  4. Step 4: Simplify right side
    13,813.01x = 156,840,013.99
  5. Step 5: Solve for x
    x = 156,840,013.99/13,813.01
  6. Step 6: Final answer
    x = 11,354.51

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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.