Home / 20,288.79-27,953.98-15,162.84

Finding the Fourth Proportional to 20,288.79, 27,953.98 and 15,162.84

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Solution

The fourth proportional to 20,288.79, 27,953.98 and 15,162.84 is: 20,891.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,288.79 : 27,953.98 = 15,162.84 : x
  2. Step 2: Convert to fraction form
    20,288.79/27,953.98 = 15,162.84/x
  3. Step 3: Cross multiply
    20,288.79x = 27,953.98 × 15,162.84
  4. Step 4: Simplify right side
    20,288.79x = 423,861,688.20
  5. Step 5: Solve for x
    x = 423,861,688.20/20,288.79
  6. Step 6: Final answer
    x = 20,891.42

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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.