Home / 30,132.19-45,198.56-7,948.72

Finding the Fourth Proportional to 30,132.19, 45,198.56 and 7,948.72

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Solution

The fourth proportional to 30,132.19, 45,198.56 and 7,948.72 is: 11,923.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,132.19 : 45,198.56 = 7,948.72 : x
  2. Step 2: Convert to fraction form
    30,132.19/45,198.56 = 7,948.72/x
  3. Step 3: Cross multiply
    30,132.19x = 45,198.56 × 7,948.72
  4. Step 4: Simplify right side
    30,132.19x = 359,270,697.84
  5. Step 5: Solve for x
    x = 359,270,697.84/30,132.19
  6. Step 6: Final answer
    x = 11,923.15

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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.