Home / 13,227.84-18,245.52-7,919.28

Finding the Fourth Proportional to 13,227.84, 18,245.52 and 7,919.28

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Solution

The fourth proportional to 13,227.84, 18,245.52 and 7,919.28 is: 10,923.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,227.84 : 18,245.52 = 7,919.28 : x
  2. Step 2: Convert to fraction form
    13,227.84/18,245.52 = 7,919.28/x
  3. Step 3: Cross multiply
    13,227.84x = 18,245.52 × 7,919.28
  4. Step 4: Simplify right side
    13,227.84x = 144,491,381.63
  5. Step 5: Solve for x
    x = 144,491,381.63/13,227.84
  6. Step 6: Final answer
    x = 10,923.28

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Half scale
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Double scale
Find fourth proportional to 13,228.84, 18,246.90 and 7,920.28
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.