Home / 14,141.80-21,212.70-7,119.10

Finding the Fourth Proportional to 14,141.80, 21,212.70 and 7,119.10

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Solution

The fourth proportional to 14,141.80, 21,212.70 and 7,119.10 is: 10,678.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,141.80 : 21,212.70 = 7,119.10 : x
  2. Step 2: Convert to fraction form
    14,141.80/21,212.70 = 7,119.10/x
  3. Step 3: Cross multiply
    14,141.80x = 21,212.70 × 7,119.10
  4. Step 4: Simplify right side
    14,141.80x = 151,015,332.57
  5. Step 5: Solve for x
    x = 151,015,332.57/14,141.80
  6. Step 6: Final answer
    x = 10,678.65

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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.