Home / 28,102.91-38,800.10-18,035.69

Finding the Fourth Proportional to 28,102.91, 38,800.10 and 18,035.69

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Solution

The fourth proportional to 28,102.91, 38,800.10 and 18,035.69 is: 24,900.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,102.91 : 38,800.10 = 18,035.69 : x
  2. Step 2: Convert to fraction form
    28,102.91/38,800.10 = 18,035.69/x
  3. Step 3: Cross multiply
    28,102.91x = 38,800.10 × 18,035.69
  4. Step 4: Simplify right side
    28,102.91x = 699,786,575.57
  5. Step 5: Solve for x
    x = 699,786,575.57/28,102.91
  6. Step 6: Final answer
    x = 24,900.86

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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.