Home / 18,836.28-28,216.71-11,335.68

Finding the Fourth Proportional to 18,836.28, 28,216.71 and 11,335.68

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Solution

The fourth proportional to 18,836.28, 28,216.71 and 11,335.68 is: 16,980.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,836.28 : 28,216.71 = 11,335.68 : x
  2. Step 2: Convert to fraction form
    18,836.28/28,216.71 = 11,335.68/x
  3. Step 3: Cross multiply
    18,836.28x = 28,216.71 × 11,335.68
  4. Step 4: Simplify right side
    18,836.28x = 319,855,595.21
  5. Step 5: Solve for x
    x = 319,855,595.21/18,836.28
  6. Step 6: Final answer
    x = 16,980.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.