Home / 27,680.67-38,217.71-21,296.00

Finding the Fourth Proportional to 27,680.67, 38,217.71 and 21,296.00

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Solution

The fourth proportional to 27,680.67, 38,217.71 and 21,296.00 is: 29,402.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,680.67 : 38,217.71 = 21,296.00 : x
  2. Step 2: Convert to fraction form
    27,680.67/38,217.71 = 21,296.00/x
  3. Step 3: Cross multiply
    27,680.67x = 38,217.71 × 21,296.00
  4. Step 4: Simplify right side
    27,680.67x = 813,884,500.94
  5. Step 5: Solve for x
    x = 813,884,500.94/27,680.67
  6. Step 6: Final answer
    x = 29,402.63

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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.