Home / 13,383.94-18,472.12-7,717.66

Finding the Fourth Proportional to 13,383.94, 18,472.12 and 7,717.66

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Solution

The fourth proportional to 13,383.94, 18,472.12 and 7,717.66 is: 10,651.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,383.94 : 18,472.12 = 7,717.66 : x
  2. Step 2: Convert to fraction form
    13,383.94/18,472.12 = 7,717.66/x
  3. Step 3: Cross multiply
    13,383.94x = 18,472.12 × 7,717.66
  4. Step 4: Simplify right side
    13,383.94x = 142,561,541.64
  5. Step 5: Solve for x
    x = 142,561,541.64/13,383.94
  6. Step 6: Final answer
    x = 10,651.69

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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.