Home / 19,986.72-29,966.19-10,119.30

Finding the Fourth Proportional to 19,986.72, 29,966.19 and 10,119.30

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Solution

The fourth proportional to 19,986.72, 29,966.19 and 10,119.30 is: 15,171.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,986.72 : 29,966.19 = 10,119.30 : x
  2. Step 2: Convert to fraction form
    19,986.72/29,966.19 = 10,119.30/x
  3. Step 3: Cross multiply
    19,986.72x = 29,966.19 × 10,119.30
  4. Step 4: Simplify right side
    19,986.72x = 303,236,866.47
  5. Step 5: Solve for x
    x = 303,236,866.47/19,986.72
  6. Step 6: Final answer
    x = 15,171.92

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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.