Home / 20,734.85-28,614.71-12,669.84

Finding the Fourth Proportional to 20,734.85, 28,614.71 and 12,669.84

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Solution

The fourth proportional to 20,734.85, 28,614.71 and 12,669.84 is: 17,484.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,734.85 : 28,614.71 = 12,669.84 : x
  2. Step 2: Convert to fraction form
    20,734.85/28,614.71 = 12,669.84/x
  3. Step 3: Cross multiply
    20,734.85x = 28,614.71 × 12,669.84
  4. Step 4: Simplify right side
    20,734.85x = 362,543,734.00
  5. Step 5: Solve for x
    x = 362,543,734.00/20,734.85
  6. Step 6: Final answer
    x = 17,484.76

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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.