Home / 21,818.60-32,727.90-20,214.80

Finding the Fourth Proportional to 21,818.60, 32,727.90 and 20,214.80

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Solution

The fourth proportional to 21,818.60, 32,727.90 and 20,214.80 is: 30,322.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,818.60 : 32,727.90 = 20,214.80 : x
  2. Step 2: Convert to fraction form
    21,818.60/32,727.90 = 20,214.80/x
  3. Step 3: Cross multiply
    21,818.60x = 32,727.90 × 20,214.80
  4. Step 4: Simplify right side
    21,818.60x = 661,587,952.92
  5. Step 5: Solve for x
    x = 661,587,952.92/21,818.60
  6. Step 6: Final answer
    x = 30,322.20

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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.