Home / 15,294.68-21,115.86-9,998.36

Finding the Fourth Proportional to 15,294.68, 21,115.86 and 9,998.36

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Solution

The fourth proportional to 15,294.68, 21,115.86 and 9,998.36 is: 13,803.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,294.68 : 21,115.86 = 9,998.36 : x
  2. Step 2: Convert to fraction form
    15,294.68/21,115.86 = 9,998.36/x
  3. Step 3: Cross multiply
    15,294.68x = 21,115.86 × 9,998.36
  4. Step 4: Simplify right side
    15,294.68x = 211,123,969.99
  5. Step 5: Solve for x
    x = 211,123,969.99/15,294.68
  6. Step 6: Final answer
    x = 13,803.75

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Similar ratio
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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.