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Finding the Fourth Proportional to 13,606.60, 20,409.90 and 10,150.60

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Solution

The fourth proportional to 13,606.60, 20,409.90 and 10,150.60 is: 15,225.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,606.60 : 20,409.90 = 10,150.60 : x
  2. Step 2: Convert to fraction form
    13,606.60/20,409.90 = 10,150.60/x
  3. Step 3: Cross multiply
    13,606.60x = 20,409.90 × 10,150.60
  4. Step 4: Simplify right side
    13,606.60x = 207,172,730.94
  5. Step 5: Solve for x
    x = 207,172,730.94/13,606.60
  6. Step 6: Final answer
    x = 15,225.90

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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.