Home / 19,885.68-27,440.64-11,502.72

Finding the Fourth Proportional to 19,885.68, 27,440.64 and 11,502.72

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Solution

The fourth proportional to 19,885.68, 27,440.64 and 11,502.72 is: 15,872.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,885.68 : 27,440.64 = 11,502.72 : x
  2. Step 2: Convert to fraction form
    19,885.68/27,440.64 = 11,502.72/x
  3. Step 3: Cross multiply
    19,885.68x = 27,440.64 × 11,502.72
  4. Step 4: Simplify right side
    19,885.68x = 315,641,998.54
  5. Step 5: Solve for x
    x = 315,641,998.54/19,885.68
  6. Step 6: Final answer
    x = 15,872.83

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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.