Home / 21,717.20-32,575.80-11,327.60

Finding the Fourth Proportional to 21,717.20, 32,575.80 and 11,327.60

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Solution

The fourth proportional to 21,717.20, 32,575.80 and 11,327.60 is: 16,991.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,717.20 : 32,575.80 = 11,327.60 : x
  2. Step 2: Convert to fraction form
    21,717.20/32,575.80 = 11,327.60/x
  3. Step 3: Cross multiply
    21,717.20x = 32,575.80 × 11,327.60
  4. Step 4: Simplify right side
    21,717.20x = 369,005,632.08
  5. Step 5: Solve for x
    x = 369,005,632.08/21,717.20
  6. Step 6: Final answer
    x = 16,991.40

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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.