Home / 14,112.36-21,169.08-7,178.76

Finding the Fourth Proportional to 14,112.36, 21,169.08 and 7,178.76

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Solution

The fourth proportional to 14,112.36, 21,169.08 and 7,178.76 is: 10,768.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,112.36 : 21,169.08 = 7,178.76 : x
  2. Step 2: Convert to fraction form
    14,112.36/21,169.08 = 7,178.76/x
  3. Step 3: Cross multiply
    14,112.36x = 21,169.08 × 7,178.76
  4. Step 4: Simplify right side
    14,112.36x = 151,967,744.74
  5. Step 5: Solve for x
    x = 151,967,744.74/14,112.36
  6. Step 6: Final answer
    x = 10,768.41

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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.