Home / 15,119.94-20,858.25-9,816.42

Finding the Fourth Proportional to 15,119.94, 20,858.25 and 9,816.42

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Solution

The fourth proportional to 15,119.94, 20,858.25 and 9,816.42 is: 13,541.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,119.94 : 20,858.25 = 9,816.42 : x
  2. Step 2: Convert to fraction form
    15,119.94/20,858.25 = 9,816.42/x
  3. Step 3: Cross multiply
    15,119.94x = 20,858.25 × 9,816.42
  4. Step 4: Simplify right side
    15,119.94x = 204,753,342.47
  5. Step 5: Solve for x
    x = 204,753,342.47/15,119.94
  6. Step 6: Final answer
    x = 13,541.94

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Double scale
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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.