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Finding the Fourth Proportional to 9,486.60, 13,100.99 and 7,824.48

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Solution

The fourth proportional to 9,486.60, 13,100.99 and 7,824.48 is: 10,805.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,486.60 : 13,100.99 = 7,824.48 : x
  2. Step 2: Convert to fraction form
    9,486.60/13,100.99 = 7,824.48/x
  3. Step 3: Cross multiply
    9,486.60x = 13,100.99 × 7,824.48
  4. Step 4: Simplify right side
    9,486.60x = 102,508,395.11
  5. Step 5: Solve for x
    x = 102,508,395.11/9,486.60
  6. Step 6: Final answer
    x = 10,805.60

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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.