Home / 21,421.22-32,135.61-8,272.49

Finding the Fourth Proportional to 21,421.22, 32,135.61 and 8,272.49

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Solution

The fourth proportional to 21,421.22, 32,135.61 and 8,272.49 is: 12,410.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,421.22 : 32,135.61 = 8,272.49 : x
  2. Step 2: Convert to fraction form
    21,421.22/32,135.61 = 8,272.49/x
  3. Step 3: Cross multiply
    21,421.22x = 32,135.61 × 8,272.49
  4. Step 4: Simplify right side
    21,421.22x = 265,841,512.37
  5. Step 5: Solve for x
    x = 265,841,512.37/21,421.22
  6. Step 6: Final answer
    x = 12,410.19

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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.