Home / 20,658.35-28,507.95-11,705.61

Finding the Fourth Proportional to 20,658.35, 28,507.95 and 11,705.61

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Solution

The fourth proportional to 20,658.35, 28,507.95 and 11,705.61 is: 16,153.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,658.35 : 28,507.95 = 11,705.61 : x
  2. Step 2: Convert to fraction form
    20,658.35/28,507.95 = 11,705.61/x
  3. Step 3: Cross multiply
    20,658.35x = 28,507.95 × 11,705.61
  4. Step 4: Simplify right side
    20,658.35x = 333,702,944.60
  5. Step 5: Solve for x
    x = 333,702,944.60/20,658.35
  6. Step 6: Final answer
    x = 16,153.42

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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.