Home / 19,965.28-27,551.28-11,581.12

Finding the Fourth Proportional to 19,965.28, 27,551.28 and 11,581.12

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Solution

The fourth proportional to 19,965.28, 27,551.28 and 11,581.12 is: 15,981.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,965.28 : 27,551.28 = 11,581.12 : x
  2. Step 2: Convert to fraction form
    19,965.28/27,551.28 = 11,581.12/x
  3. Step 3: Cross multiply
    19,965.28x = 27,551.28 × 11,581.12
  4. Step 4: Simplify right side
    19,965.28x = 319,074,679.83
  5. Step 5: Solve for x
    x = 319,074,679.83/19,965.28
  6. Step 6: Final answer
    x = 15,981.48

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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.