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Finding the Fourth Proportional to 9,660.58, 13,338 and 7,418.43

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Solution

The fourth proportional to 9,660.58, 13,338 and 7,418.43 is: 10,242.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,660.58 : 13,338 = 7,418.43 : x
  2. Step 2: Convert to fraction form
    9,660.58/13,338 = 7,418.43/x
  3. Step 3: Cross multiply
    9,660.58x = 13,338 × 7,418.43
  4. Step 4: Simplify right side
    9,660.58x = 98,947,019.34
  5. Step 5: Solve for x
    x = 98,947,019.34/9,660.58
  6. Step 6: Final answer
    x = 10,242.35

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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.