Home / 30,121.16-45,182.04-7,937.72

Finding the Fourth Proportional to 30,121.16, 45,182.04 and 7,937.72

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Solution

The fourth proportional to 30,121.16, 45,182.04 and 7,937.72 is: 11,906.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,121.16 : 45,182.04 = 7,937.72 : x
  2. Step 2: Convert to fraction form
    30,121.16/45,182.04 = 7,937.72/x
  3. Step 3: Cross multiply
    30,121.16x = 45,182.04 × 7,937.72
  4. Step 4: Simplify right side
    30,121.16x = 358,642,382.55
  5. Step 5: Solve for x
    x = 358,642,382.55/30,121.16
  6. Step 6: Final answer
    x = 11,906.66

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Double scale
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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.