Home / 15,759.28-21,745.76-9,045.20

Finding the Fourth Proportional to 15,759.28, 21,745.76 and 9,045.20

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Solution

The fourth proportional to 15,759.28, 21,745.76 and 9,045.20 is: 12,481.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,759.28 : 21,745.76 = 9,045.20 : x
  2. Step 2: Convert to fraction form
    15,759.28/21,745.76 = 9,045.20/x
  3. Step 3: Cross multiply
    15,759.28x = 21,745.76 × 9,045.20
  4. Step 4: Simplify right side
    15,759.28x = 196,694,748.35
  5. Step 5: Solve for x
    x = 196,694,748.35/15,759.28
  6. Step 6: Final answer
    x = 12,481.20

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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.