Home / 19,872.01-27,422.81-11,257.39

Finding the Fourth Proportional to 19,872.01, 27,422.81 and 11,257.39

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Solution

The fourth proportional to 19,872.01, 27,422.81 and 11,257.39 is: 15,534.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,872.01 : 27,422.81 = 11,257.39 : x
  2. Step 2: Convert to fraction form
    19,872.01/27,422.81 = 11,257.39/x
  3. Step 3: Cross multiply
    19,872.01x = 27,422.81 × 11,257.39
  4. Step 4: Simplify right side
    19,872.01x = 308,709,210.78
  5. Step 5: Solve for x
    x = 308,709,210.78/19,872.01
  6. Step 6: Final answer
    x = 15,534.88

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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.