Home / 27,729.64-38,262.48-15,793.20

Finding the Fourth Proportional to 27,729.64, 38,262.48 and 15,793.20

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Solution

The fourth proportional to 27,729.64, 38,262.48 and 15,793.20 is: 21,792.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,729.64 : 38,262.48 = 15,793.20 : x
  2. Step 2: Convert to fraction form
    27,729.64/38,262.48 = 15,793.20/x
  3. Step 3: Cross multiply
    27,729.64x = 38,262.48 × 15,793.20
  4. Step 4: Simplify right side
    27,729.64x = 604,286,999.14
  5. Step 5: Solve for x
    x = 604,286,999.14/27,729.64
  6. Step 6: Final answer
    x = 21,792.10

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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.