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Finding the Fourth Proportional to 13,352.13, 18,420.17 and 8,043.89

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Solution

The fourth proportional to 13,352.13, 18,420.17 and 8,043.89 is: 11,097.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,352.13 : 18,420.17 = 8,043.89 : x
  2. Step 2: Convert to fraction form
    13,352.13/18,420.17 = 8,043.89/x
  3. Step 3: Cross multiply
    13,352.13x = 18,420.17 × 8,043.89
  4. Step 4: Simplify right side
    13,352.13x = 148,169,688.94
  5. Step 5: Solve for x
    x = 148,169,688.94/13,352.13
  6. Step 6: Final answer
    x = 11,097.08

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Double scale
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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.