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Finding the Fourth Proportional to 11,353.59, 15,661.56 and 6,815.11

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Solution

The fourth proportional to 11,353.59, 15,661.56 and 6,815.11 is: 9,401.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,353.59 : 15,661.56 = 6,815.11 : x
  2. Step 2: Convert to fraction form
    11,353.59/15,661.56 = 6,815.11/x
  3. Step 3: Cross multiply
    11,353.59x = 15,661.56 × 6,815.11
  4. Step 4: Simplify right side
    11,353.59x = 106,735,254.17
  5. Step 5: Solve for x
    x = 106,735,254.17/11,353.59
  6. Step 6: Final answer
    x = 9,401.01

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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.