Home / 21,764.40-32,646.60-20,743.80

Finding the Fourth Proportional to 21,764.40, 32,646.60 and 20,743.80

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Solution

The fourth proportional to 21,764.40, 32,646.60 and 20,743.80 is: 31,115.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,764.40 : 32,646.60 = 20,743.80 : x
  2. Step 2: Convert to fraction form
    21,764.40/32,646.60 = 20,743.80/x
  3. Step 3: Cross multiply
    21,764.40x = 32,646.60 × 20,743.80
  4. Step 4: Simplify right side
    21,764.40x = 677,214,541.08
  5. Step 5: Solve for x
    x = 677,214,541.08/21,764.40
  6. Step 6: Final answer
    x = 31,115.70

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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.