Home / 13,512.38-18,644.87-12,423.66

Finding the Fourth Proportional to 13,512.38, 18,644.87 and 12,423.66

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Solution

The fourth proportional to 13,512.38, 18,644.87 and 12,423.66 is: 17,142.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,512.38 : 18,644.87 = 12,423.66 : x
  2. Step 2: Convert to fraction form
    13,512.38/18,644.87 = 12,423.66/x
  3. Step 3: Cross multiply
    13,512.38x = 18,644.87 × 12,423.66
  4. Step 4: Simplify right side
    13,512.38x = 231,637,463.51
  5. Step 5: Solve for x
    x = 231,637,463.51/13,512.38
  6. Step 6: Final answer
    x = 17,142.62

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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.