Home / 20,674.40-28,530.08-11,722.76

Finding the Fourth Proportional to 20,674.40, 28,530.08 and 11,722.76

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Solution

The fourth proportional to 20,674.40, 28,530.08 and 11,722.76 is: 16,177.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.40 : 28,530.08 = 11,722.76 : x
  2. Step 2: Convert to fraction form
    20,674.40/28,530.08 = 11,722.76/x
  3. Step 3: Cross multiply
    20,674.40x = 28,530.08 × 11,722.76
  4. Step 4: Simplify right side
    20,674.40x = 334,451,280.62
  5. Step 5: Solve for x
    x = 334,451,280.62/20,674.40
  6. Step 6: Final answer
    x = 16,177.07

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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.