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Finding the Fourth Proportional to 9,998.71, 15,001.71 and 5,319.14

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Solution

The fourth proportional to 9,998.71, 15,001.71 and 5,319.14 is: 7,980.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,998.71 : 15,001.71 = 5,319.14 : x
  2. Step 2: Convert to fraction form
    9,998.71/15,001.71 = 5,319.14/x
  3. Step 3: Cross multiply
    9,998.71x = 15,001.71 × 5,319.14
  4. Step 4: Simplify right side
    9,998.71x = 79,796,100.77
  5. Step 5: Solve for x
    x = 79,796,100.77/9,998.71
  6. Step 6: Final answer
    x = 7,980.64

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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.