Home / 18,890.77-28,336.89-5,742.82

Finding the Fourth Proportional to 18,890.77, 28,336.89 and 5,742.82

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Solution

The fourth proportional to 18,890.77, 28,336.89 and 5,742.82 is: 8,614.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,890.77 : 28,336.89 = 5,742.82 : x
  2. Step 2: Convert to fraction form
    18,890.77/28,336.89 = 5,742.82/x
  3. Step 3: Cross multiply
    18,890.77x = 28,336.89 × 5,742.82
  4. Step 4: Simplify right side
    18,890.77x = 162,733,658.63
  5. Step 5: Solve for x
    x = 162,733,658.63/18,890.77
  6. Step 6: Final answer
    x = 8,614.45

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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.