Home / 20,674.87-28,530.47-11,722.98

Finding the Fourth Proportional to 20,674.87, 28,530.47 and 11,722.98

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Solution

The fourth proportional to 20,674.87, 28,530.47 and 11,722.98 is: 16,177.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.87 : 28,530.47 = 11,722.98 : x
  2. Step 2: Convert to fraction form
    20,674.87/28,530.47 = 11,722.98/x
  3. Step 3: Cross multiply
    20,674.87x = 28,530.47 × 11,722.98
  4. Step 4: Simplify right side
    20,674.87x = 334,462,129.20
  5. Step 5: Solve for x
    x = 334,462,129.20/20,674.87
  6. Step 6: Final answer
    x = 16,177.23

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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.