Home / 19,805.28-27,331.20-10,853.12

Finding the Fourth Proportional to 19,805.28, 27,331.20 and 10,853.12

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Solution

The fourth proportional to 19,805.28, 27,331.20 and 10,853.12 is: 14,977.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,805.28 : 27,331.20 = 10,853.12 : x
  2. Step 2: Convert to fraction form
    19,805.28/27,331.20 = 10,853.12/x
  3. Step 3: Cross multiply
    19,805.28x = 27,331.20 × 10,853.12
  4. Step 4: Simplify right side
    19,805.28x = 296,628,793.34
  5. Step 5: Solve for x
    x = 296,628,793.34/19,805.28
  6. Step 6: Final answer
    x = 14,977.26

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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.