Home / 30,147.62-45,220.74-7,962.56

Finding the Fourth Proportional to 30,147.62, 45,220.74 and 7,962.56

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Solution

The fourth proportional to 30,147.62, 45,220.74 and 7,962.56 is: 11,943.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,147.62 : 45,220.74 = 7,962.56 : x
  2. Step 2: Convert to fraction form
    30,147.62/45,220.74 = 7,962.56/x
  3. Step 3: Cross multiply
    30,147.62x = 45,220.74 × 7,962.56
  4. Step 4: Simplify right side
    30,147.62x = 360,072,855.49
  5. Step 5: Solve for x
    x = 360,072,855.49/30,147.62
  6. Step 6: Final answer
    x = 11,943.66

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Half scale
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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.