Home / 20,818.62-31,238.18-9,723.69

Finding the Fourth Proportional to 20,818.62, 31,238.18 and 9,723.69

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Solution

The fourth proportional to 20,818.62, 31,238.18 and 9,723.69 is: 14,590.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,818.62 : 31,238.18 = 9,723.69 : x
  2. Step 2: Convert to fraction form
    20,818.62/31,238.18 = 9,723.69/x
  3. Step 3: Cross multiply
    20,818.62x = 31,238.18 × 9,723.69
  4. Step 4: Simplify right side
    20,818.62x = 303,750,378.48
  5. Step 5: Solve for x
    x = 303,750,378.48/20,818.62
  6. Step 6: Final answer
    x = 14,590.32

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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.