Home / 21,327.21-31,989.68-6,536.18

Finding the Fourth Proportional to 21,327.21, 31,989.68 and 6,536.18

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Solution

The fourth proportional to 21,327.21, 31,989.68 and 6,536.18 is: 9,803.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,327.21 : 31,989.68 = 6,536.18 : x
  2. Step 2: Convert to fraction form
    21,327.21/31,989.68 = 6,536.18/x
  3. Step 3: Cross multiply
    21,327.21x = 31,989.68 × 6,536.18
  4. Step 4: Simplify right side
    21,327.21x = 209,090,113.99
  5. Step 5: Solve for x
    x = 209,090,113.99/21,327.21
  6. Step 6: Final answer
    x = 9,803.91

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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.