Home / 19,680.44-27,159.77-10,728.05

Finding the Fourth Proportional to 19,680.44, 27,159.77 and 10,728.05

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Solution

The fourth proportional to 19,680.44, 27,159.77 and 10,728.05 is: 14,805.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,680.44 : 27,159.77 = 10,728.05 : x
  2. Step 2: Convert to fraction form
    19,680.44/27,159.77 = 10,728.05/x
  3. Step 3: Cross multiply
    19,680.44x = 27,159.77 × 10,728.05
  4. Step 4: Simplify right side
    19,680.44x = 291,371,261.57
  5. Step 5: Solve for x
    x = 291,371,261.57/19,680.44
  6. Step 6: Final answer
    x = 14,805.12

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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.