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Finding the Fourth Proportional to 9,998.62, 15,007.03 and 5,322.56

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Solution

The fourth proportional to 9,998.62, 15,007.03 and 5,322.56 is: 7,988.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,998.62 : 15,007.03 = 5,322.56 : x
  2. Step 2: Convert to fraction form
    9,998.62/15,007.03 = 5,322.56/x
  3. Step 3: Cross multiply
    9,998.62x = 15,007.03 × 5,322.56
  4. Step 4: Simplify right side
    9,998.62x = 79,875,729.26
  5. Step 5: Solve for x
    x = 79,875,729.26/9,998.62
  6. Step 6: Final answer
    x = 7,988.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.