Home / 12,219.81-16,863.44-7,184.13

Finding the Fourth Proportional to 12,219.81, 16,863.44 and 7,184.13

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Solution

The fourth proportional to 12,219.81, 16,863.44 and 7,184.13 is: 9,914.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219.81 : 16,863.44 = 7,184.13 : x
  2. Step 2: Convert to fraction form
    12,219.81/16,863.44 = 7,184.13/x
  3. Step 3: Cross multiply
    12,219.81x = 16,863.44 × 7,184.13
  4. Step 4: Simplify right side
    12,219.81x = 121,149,109.29
  5. Step 5: Solve for x
    x = 121,149,109.29/12,219.81
  6. Step 6: Final answer
    x = 9,914.16

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Double scale
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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.