Home / 27,663.84-38,174.88-15,728.16

Finding the Fourth Proportional to 27,663.84, 38,174.88 and 15,728.16

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Solution

The fourth proportional to 27,663.84, 38,174.88 and 15,728.16 is: 21,704.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,663.84 : 38,174.88 = 15,728.16 : x
  2. Step 2: Convert to fraction form
    27,663.84/38,174.88 = 15,728.16/x
  3. Step 3: Cross multiply
    27,663.84x = 38,174.88 × 15,728.16
  4. Step 4: Simplify right side
    27,663.84x = 600,420,620.62
  5. Step 5: Solve for x
    x = 600,420,620.62/27,663.84
  6. Step 6: Final answer
    x = 21,704.17

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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.