Home / 21,081.28-29,097.48-13,907.92

Finding the Fourth Proportional to 21,081.28, 29,097.48 and 13,907.92

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Solution

The fourth proportional to 21,081.28, 29,097.48 and 13,907.92 is: 19,196.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,081.28 : 29,097.48 = 13,907.92 : x
  2. Step 2: Convert to fraction form
    21,081.28/29,097.48 = 13,907.92/x
  3. Step 3: Cross multiply
    21,081.28x = 29,097.48 × 13,907.92
  4. Step 4: Simplify right side
    21,081.28x = 404,685,424.04
  5. Step 5: Solve for x
    x = 404,685,424.04/21,081.28
  6. Step 6: Final answer
    x = 19,196.44

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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.