Home / 20,288.67-27,953.80-15,162.72

Finding the Fourth Proportional to 20,288.67, 27,953.80 and 15,162.72

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Solution

The fourth proportional to 20,288.67, 27,953.80 and 15,162.72 is: 20,891.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,288.67 : 27,953.80 = 15,162.72 : x
  2. Step 2: Convert to fraction form
    20,288.67/27,953.80 = 15,162.72/x
  3. Step 3: Cross multiply
    20,288.67x = 27,953.80 × 15,162.72
  4. Step 4: Simplify right side
    20,288.67x = 423,855,642.34
  5. Step 5: Solve for x
    x = 423,855,642.34/20,288.67
  6. Step 6: Final answer
    x = 20,891.25

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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.