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Finding the Fourth Proportional to 13,709.57, 20,566.51 and 5,812.11

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Solution

The fourth proportional to 13,709.57, 20,566.51 and 5,812.11 is: 8,719.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,709.57 : 20,566.51 = 5,812.11 : x
  2. Step 2: Convert to fraction form
    13,709.57/20,566.51 = 5,812.11/x
  3. Step 3: Cross multiply
    13,709.57x = 20,566.51 × 5,812.11
  4. Step 4: Simplify right side
    13,709.57x = 119,534,803.91
  5. Step 5: Solve for x
    x = 119,534,803.91/13,709.57
  6. Step 6: Final answer
    x = 8,719.08

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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.