Home / 21,003.26-31,518.08-8,523.34

Finding the Fourth Proportional to 21,003.26, 31,518.08 and 8,523.34

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Solution

The fourth proportional to 21,003.26, 31,518.08 and 8,523.34 is: 12,790.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,003.26 : 31,518.08 = 8,523.34 : x
  2. Step 2: Convert to fraction form
    21,003.26/31,518.08 = 8,523.34/x
  3. Step 3: Cross multiply
    21,003.26x = 31,518.08 × 8,523.34
  4. Step 4: Simplify right side
    21,003.26x = 268,639,311.99
  5. Step 5: Solve for x
    x = 268,639,311.99/21,003.26
  6. Step 6: Final answer
    x = 12,790.36

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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.