Home / 20,928.38-28,881.36-11,497.14

Finding the Fourth Proportional to 20,928.38, 28,881.36 and 11,497.14

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Solution

The fourth proportional to 20,928.38, 28,881.36 and 11,497.14 is: 15,866.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,928.38 : 28,881.36 = 11,497.14 : x
  2. Step 2: Convert to fraction form
    20,928.38/28,881.36 = 11,497.14/x
  3. Step 3: Cross multiply
    20,928.38x = 28,881.36 × 11,497.14
  4. Step 4: Simplify right side
    20,928.38x = 332,053,039.31
  5. Step 5: Solve for x
    x = 332,053,039.31/20,928.38
  6. Step 6: Final answer
    x = 15,866.16

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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.