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Finding the Fourth Proportional to 15,336.36, 21,165.01 and 8,531.10

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Solution

The fourth proportional to 15,336.36, 21,165.01 and 8,531.10 is: 11,773.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,336.36 : 21,165.01 = 8,531.10 : x
  2. Step 2: Convert to fraction form
    15,336.36/21,165.01 = 8,531.10/x
  3. Step 3: Cross multiply
    15,336.36x = 21,165.01 × 8,531.10
  4. Step 4: Simplify right side
    15,336.36x = 180,560,816.81
  5. Step 5: Solve for x
    x = 180,560,816.81/15,336.36
  6. Step 6: Final answer
    x = 11,773.38

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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.