Home / 21,479.80-32,222.10-6,688.60

Finding the Fourth Proportional to 21,479.80, 32,222.10 and 6,688.60

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Solution

The fourth proportional to 21,479.80, 32,222.10 and 6,688.60 is: 10,033.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,479.80 : 32,222.10 = 6,688.60 : x
  2. Step 2: Convert to fraction form
    21,479.80/32,222.10 = 6,688.60/x
  3. Step 3: Cross multiply
    21,479.80x = 32,222.10 × 6,688.60
  4. Step 4: Simplify right side
    21,479.80x = 215,520,738.06
  5. Step 5: Solve for x
    x = 215,520,738.06/21,479.80
  6. Step 6: Final answer
    x = 10,033.65

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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.