Home / 15,011.83-20,716.40-8,205.86

Finding the Fourth Proportional to 15,011.83, 20,716.40 and 8,205.86

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Solution

The fourth proportional to 15,011.83, 20,716.40 and 8,205.86 is: 11,324.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,011.83 : 20,716.40 = 8,205.86 : x
  2. Step 2: Convert to fraction form
    15,011.83/20,716.40 = 8,205.86/x
  3. Step 3: Cross multiply
    15,011.83x = 20,716.40 × 8,205.86
  4. Step 4: Simplify right side
    15,011.83x = 169,995,774.52
  5. Step 5: Solve for x
    x = 169,995,774.52/15,011.83
  6. Step 6: Final answer
    x = 11,324.12

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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.