Home / 19,131.64-28,680.18-6,816.76

Finding the Fourth Proportional to 19,131.64, 28,680.18 and 6,816.76

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Solution

The fourth proportional to 19,131.64, 28,680.18 and 6,816.76 is: 10,218.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,131.64 : 28,680.18 = 6,816.76 : x
  2. Step 2: Convert to fraction form
    19,131.64/28,680.18 = 6,816.76/x
  3. Step 3: Cross multiply
    19,131.64x = 28,680.18 × 6,816.76
  4. Step 4: Simplify right side
    19,131.64x = 195,505,903.82
  5. Step 5: Solve for x
    x = 195,505,903.82/19,131.64
  6. Step 6: Final answer
    x = 10,218.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.