Home / 12,749.16-19,082.79-6,811.20

Finding the Fourth Proportional to 12,749.16, 19,082.79 and 6,811.20

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Solution

The fourth proportional to 12,749.16, 19,082.79 and 6,811.20 is: 10,194.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,749.16 : 19,082.79 = 6,811.20 : x
  2. Step 2: Convert to fraction form
    12,749.16/19,082.79 = 6,811.20/x
  3. Step 3: Cross multiply
    12,749.16x = 19,082.79 × 6,811.20
  4. Step 4: Simplify right side
    12,749.16x = 129,976,699.25
  5. Step 5: Solve for x
    x = 129,976,699.25/12,749.16
  6. Step 6: Final answer
    x = 10,194.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.