Home / 21,339.12-32,008.80-8,188.32

Finding the Fourth Proportional to 21,339.12, 32,008.80 and 8,188.32

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Solution

The fourth proportional to 21,339.12, 32,008.80 and 8,188.32 is: 12,282.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,339.12 : 32,008.80 = 8,188.32 : x
  2. Step 2: Convert to fraction form
    21,339.12/32,008.80 = 8,188.32/x
  3. Step 3: Cross multiply
    21,339.12x = 32,008.80 × 8,188.32
  4. Step 4: Simplify right side
    21,339.12x = 262,098,297.22
  5. Step 5: Solve for x
    x = 262,098,297.22/21,339.12
  6. Step 6: Final answer
    x = 12,282.53

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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.