Home / 21,168.88-31,752.04-9,478.96

Finding the Fourth Proportional to 21,168.88, 31,752.04 and 9,478.96

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Solution

The fourth proportional to 21,168.88, 31,752.04 and 9,478.96 is: 14,217.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,168.88 : 31,752.04 = 9,478.96 : x
  2. Step 2: Convert to fraction form
    21,168.88/31,752.04 = 9,478.96/x
  3. Step 3: Cross multiply
    21,168.88x = 31,752.04 × 9,478.96
  4. Step 4: Simplify right side
    21,168.88x = 300,976,317.08
  5. Step 5: Solve for x
    x = 300,976,317.08/21,168.88
  6. Step 6: Final answer
    x = 14,217.87

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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.