Home / 21,865.80-32,814.90-8,727.60

Finding the Fourth Proportional to 21,865.80, 32,814.90 and 8,727.60

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Solution

The fourth proportional to 21,865.80, 32,814.90 and 8,727.60 is: 13,097.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,865.80 : 32,814.90 = 8,727.60 : x
  2. Step 2: Convert to fraction form
    21,865.80/32,814.90 = 8,727.60/x
  3. Step 3: Cross multiply
    21,865.80x = 32,814.90 × 8,727.60
  4. Step 4: Simplify right side
    21,865.80x = 286,395,321.24
  5. Step 5: Solve for x
    x = 286,395,321.24/21,865.80
  6. Step 6: Final answer
    x = 13,097.87

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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.