Home / 19,621.28-27,087.38-13,281.38

Finding the Fourth Proportional to 19,621.28, 27,087.38 and 13,281.38

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Solution

The fourth proportional to 19,621.28, 27,087.38 and 13,281.38 is: 18,335.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,621.28 : 27,087.38 = 13,281.38 : x
  2. Step 2: Convert to fraction form
    19,621.28/27,087.38 = 13,281.38/x
  3. Step 3: Cross multiply
    19,621.28x = 27,087.38 × 13,281.38
  4. Step 4: Simplify right side
    19,621.28x = 359,757,585.14
  5. Step 5: Solve for x
    x = 359,757,585.14/19,621.28
  6. Step 6: Final answer
    x = 18,335.08

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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.