Home / 20,924.74-31,379.19-8,440.48

Finding the Fourth Proportional to 20,924.74, 31,379.19 and 8,440.48

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Solution

The fourth proportional to 20,924.74, 31,379.19 and 8,440.48 is: 12,657.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,924.74 : 31,379.19 = 8,440.48 : x
  2. Step 2: Convert to fraction form
    20,924.74/31,379.19 = 8,440.48/x
  3. Step 3: Cross multiply
    20,924.74x = 31,379.19 × 8,440.48
  4. Step 4: Simplify right side
    20,924.74x = 264,855,425.61
  5. Step 5: Solve for x
    x = 264,855,425.61/20,924.74
  6. Step 6: Final answer
    x = 12,657.53

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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.