Home / 15,166.86-20,917.89-12,734.84

Finding the Fourth Proportional to 15,166.86, 20,917.89 and 12,734.84

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Solution

The fourth proportional to 15,166.86, 20,917.89 and 12,734.84 is: 17,563.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,166.86 : 20,917.89 = 12,734.84 : x
  2. Step 2: Convert to fraction form
    15,166.86/20,917.89 = 12,734.84/x
  3. Step 3: Cross multiply
    15,166.86x = 20,917.89 × 12,734.84
  4. Step 4: Simplify right side
    15,166.86x = 266,385,982.29
  5. Step 5: Solve for x
    x = 266,385,982.29/15,166.86
  6. Step 6: Final answer
    x = 17,563.69

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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.