Home / 27,688.91-38,260.68-19,717.30

Finding the Fourth Proportional to 27,688.91, 38,260.68 and 19,717.30

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Solution

The fourth proportional to 27,688.91, 38,260.68 and 19,717.30 is: 27,245.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,688.91 : 38,260.68 = 19,717.30 : x
  2. Step 2: Convert to fraction form
    27,688.91/38,260.68 = 19,717.30/x
  3. Step 3: Cross multiply
    27,688.91x = 38,260.68 × 19,717.30
  4. Step 4: Simplify right side
    27,688.91x = 754,397,305.76
  5. Step 5: Solve for x
    x = 754,397,305.76/27,688.91
  6. Step 6: Final answer
    x = 27,245.47

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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.