Home / 13,728.24-18,938.68-8,062.89

Finding the Fourth Proportional to 13,728.24, 18,938.68 and 8,062.89

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Solution

The fourth proportional to 13,728.24, 18,938.68 and 8,062.89 is: 11,123.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728.24 : 18,938.68 = 8,062.89 : x
  2. Step 2: Convert to fraction form
    13,728.24/18,938.68 = 8,062.89/x
  3. Step 3: Cross multiply
    13,728.24x = 18,938.68 × 8,062.89
  4. Step 4: Simplify right side
    13,728.24x = 152,700,493.59
  5. Step 5: Solve for x
    x = 152,700,493.59/13,728.24
  6. Step 6: Final answer
    x = 11,123.09

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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.