Home / 20,299.29-28,017.54-12,339.83

Finding the Fourth Proportional to 20,299.29, 28,017.54 and 12,339.83

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Solution

The fourth proportional to 20,299.29, 28,017.54 and 12,339.83 is: 17,031.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,299.29 : 28,017.54 = 12,339.83 : x
  2. Step 2: Convert to fraction form
    20,299.29/28,017.54 = 12,339.83/x
  3. Step 3: Cross multiply
    20,299.29x = 28,017.54 × 12,339.83
  4. Step 4: Simplify right side
    20,299.29x = 345,731,680.62
  5. Step 5: Solve for x
    x = 345,731,680.62/20,299.29
  6. Step 6: Final answer
    x = 17,031.71

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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.