Home / 21,439.68-32,162.64-6,649.79

Finding the Fourth Proportional to 21,439.68, 32,162.64 and 6,649.79

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Solution

The fourth proportional to 21,439.68, 32,162.64 and 6,649.79 is: 9,975.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,439.68 : 32,162.64 = 6,649.79 : x
  2. Step 2: Convert to fraction form
    21,439.68/32,162.64 = 6,649.79/x
  3. Step 3: Cross multiply
    21,439.68x = 32,162.64 × 6,649.79
  4. Step 4: Simplify right side
    21,439.68x = 213,874,873.94
  5. Step 5: Solve for x
    x = 213,874,873.94/21,439.68
  6. Step 6: Final answer
    x = 9,975.65

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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.