Home / 20,287.67-27,952.43-15,161.72

Finding the Fourth Proportional to 20,287.67, 27,952.43 and 15,161.72

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Solution

The fourth proportional to 20,287.67, 27,952.43 and 15,161.72 is: 20,889.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,287.67 : 27,952.43 = 15,161.72 : x
  2. Step 2: Convert to fraction form
    20,287.67/27,952.43 = 15,161.72/x
  3. Step 3: Cross multiply
    20,287.67x = 27,952.43 × 15,161.72
  4. Step 4: Simplify right side
    20,287.67x = 423,806,701.41
  5. Step 5: Solve for x
    x = 423,806,701.41/20,287.67
  6. Step 6: Final answer
    x = 20,889.87

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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.