Home / 19,881.36-27,435.72-10,928.88

Finding the Fourth Proportional to 19,881.36, 27,435.72 and 10,928.88

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Solution

The fourth proportional to 19,881.36, 27,435.72 and 10,928.88 is: 15,081.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,881.36 : 27,435.72 = 10,928.88 : x
  2. Step 2: Convert to fraction form
    19,881.36/27,435.72 = 10,928.88/x
  3. Step 3: Cross multiply
    19,881.36x = 27,435.72 × 10,928.88
  4. Step 4: Simplify right side
    19,881.36x = 299,841,691.59
  5. Step 5: Solve for x
    x = 299,841,691.59/19,881.36
  6. Step 6: Final answer
    x = 15,081.55

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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.