Home / 19,987.38-27,581.28-11,034.81

Finding the Fourth Proportional to 19,987.38, 27,581.28 and 11,034.81

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Solution

The fourth proportional to 19,987.38, 27,581.28 and 11,034.81 is: 15,227.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,987.38 : 27,581.28 = 11,034.81 : x
  2. Step 2: Convert to fraction form
    19,987.38/27,581.28 = 11,034.81/x
  3. Step 3: Cross multiply
    19,987.38x = 27,581.28 × 11,034.81
  4. Step 4: Simplify right side
    19,987.38x = 304,354,158.51
  5. Step 5: Solve for x
    x = 304,354,158.51/19,987.38
  6. Step 6: Final answer
    x = 15,227.31

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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.