Home / 20,120.04-30,180.06-5,330.12

Finding the Fourth Proportional to 20,120.04, 30,180.06 and 5,330.12

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Solution

The fourth proportional to 20,120.04, 30,180.06 and 5,330.12 is: 7,995.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120.04 : 30,180.06 = 5,330.12 : x
  2. Step 2: Convert to fraction form
    20,120.04/30,180.06 = 5,330.12/x
  3. Step 3: Cross multiply
    20,120.04x = 30,180.06 × 5,330.12
  4. Step 4: Simplify right side
    20,120.04x = 160,863,190.51
  5. Step 5: Solve for x
    x = 160,863,190.51/20,120.04
  6. Step 6: Final answer
    x = 7,995.17

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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.