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Finding the Fourth Proportional to 13,308.06, 18,366.03 and 7,719.06

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Solution

The fourth proportional to 13,308.06, 18,366.03 and 7,719.06 is: 10,652.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,308.06 : 18,366.03 = 7,719.06 : x
  2. Step 2: Convert to fraction form
    13,308.06/18,366.03 = 7,719.06/x
  3. Step 3: Cross multiply
    13,308.06x = 18,366.03 × 7,719.06
  4. Step 4: Simplify right side
    13,308.06x = 141,768,487.53
  5. Step 5: Solve for x
    x = 141,768,487.53/13,308.06
  6. Step 6: Final answer
    x = 10,652.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.