Home / 12,423.11-17,143.43-7,114.19

Finding the Fourth Proportional to 12,423.11, 17,143.43 and 7,114.19

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Solution

The fourth proportional to 12,423.11, 17,143.43 and 7,114.19 is: 9,817.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,423.11 : 17,143.43 = 7,114.19 : x
  2. Step 2: Convert to fraction form
    12,423.11/17,143.43 = 7,114.19/x
  3. Step 3: Cross multiply
    12,423.11x = 17,143.43 × 7,114.19
  4. Step 4: Simplify right side
    12,423.11x = 121,961,496.98
  5. Step 5: Solve for x
    x = 121,961,496.98/12,423.11
  6. Step 6: Final answer
    x = 9,817.31

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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.