Home / 21,066.30-31,617.64-8,593.20

Finding the Fourth Proportional to 21,066.30, 31,617.64 and 8,593.20

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Solution

The fourth proportional to 21,066.30, 31,617.64 and 8,593.20 is: 12,897.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,066.30 : 31,617.64 = 8,593.20 : x
  2. Step 2: Convert to fraction form
    21,066.30/31,617.64 = 8,593.20/x
  3. Step 3: Cross multiply
    21,066.30x = 31,617.64 × 8,593.20
  4. Step 4: Simplify right side
    21,066.30x = 271,696,704.05
  5. Step 5: Solve for x
    x = 271,696,704.05/21,066.30
  6. Step 6: Final answer
    x = 12,897.22

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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.