Home / 12,819.12-17,695.44-9,047.76

Finding the Fourth Proportional to 12,819.12, 17,695.44 and 9,047.76

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Solution

The fourth proportional to 12,819.12, 17,695.44 and 9,047.76 is: 12,489.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,819.12 : 17,695.44 = 9,047.76 : x
  2. Step 2: Convert to fraction form
    12,819.12/17,695.44 = 9,047.76/x
  3. Step 3: Cross multiply
    12,819.12x = 17,695.44 × 9,047.76
  4. Step 4: Simplify right side
    12,819.12x = 160,104,094.21
  5. Step 5: Solve for x
    x = 160,104,094.21/12,819.12
  6. Step 6: Final answer
    x = 12,489.48

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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.