Home / 21,003.31-31,504.65-8,523.28

Finding the Fourth Proportional to 21,003.31, 31,504.65 and 8,523.28

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Solution

The fourth proportional to 21,003.31, 31,504.65 and 8,523.28 is: 12,784.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,003.31 : 31,504.65 = 8,523.28 : x
  2. Step 2: Convert to fraction form
    21,003.31/31,504.65 = 8,523.28/x
  3. Step 3: Cross multiply
    21,003.31x = 31,504.65 × 8,523.28
  4. Step 4: Simplify right side
    21,003.31x = 268,522,953.25
  5. Step 5: Solve for x
    x = 268,522,953.25/21,003.31
  6. Step 6: Final answer
    x = 12,784.79

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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.