Home / 19,728.72-27,193.11-13,988.04

Finding the Fourth Proportional to 19,728.72, 27,193.11 and 13,988.04

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Solution

The fourth proportional to 19,728.72, 27,193.11 and 13,988.04 is: 19,280.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,728.72 : 27,193.11 = 13,988.04 : x
  2. Step 2: Convert to fraction form
    19,728.72/27,193.11 = 13,988.04/x
  3. Step 3: Cross multiply
    19,728.72x = 27,193.11 × 13,988.04
  4. Step 4: Simplify right side
    19,728.72x = 380,378,310.40
  5. Step 5: Solve for x
    x = 380,378,310.40/19,728.72
  6. Step 6: Final answer
    x = 19,280.44

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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.