Home / 19,680.90-27,158.97-10,728.26

Finding the Fourth Proportional to 19,680.90, 27,158.97 and 10,728.26

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Solution

The fourth proportional to 19,680.90, 27,158.97 and 10,728.26 is: 14,804.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,680.90 : 27,158.97 = 10,728.26 : x
  2. Step 2: Convert to fraction form
    19,680.90/27,158.97 = 10,728.26/x
  3. Step 3: Cross multiply
    19,680.90x = 27,158.97 × 10,728.26
  4. Step 4: Simplify right side
    19,680.90x = 291,368,491.49
  5. Step 5: Solve for x
    x = 291,368,491.49/19,680.90
  6. Step 6: Final answer
    x = 14,804.63

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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.