Home / 30,131.19-45,197.06-7,947.72

Finding the Fourth Proportional to 30,131.19, 45,197.06 and 7,947.72

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Solution

The fourth proportional to 30,131.19, 45,197.06 and 7,947.72 is: 11,921.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,131.19 : 45,197.06 = 7,947.72 : x
  2. Step 2: Convert to fraction form
    30,131.19/45,197.06 = 7,947.72/x
  3. Step 3: Cross multiply
    30,131.19x = 45,197.06 × 7,947.72
  4. Step 4: Simplify right side
    30,131.19x = 359,213,537.96
  5. Step 5: Solve for x
    x = 359,213,537.96/30,131.19
  6. Step 6: Final answer
    x = 11,921.65

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Similar ratio
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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.