Home / 20,736.22-31,117.23-8,424.22

Finding the Fourth Proportional to 20,736.22, 31,117.23 and 8,424.22

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Solution

The fourth proportional to 20,736.22, 31,117.23 and 8,424.22 is: 12,641.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.22 : 31,117.23 = 8,424.22 : x
  2. Step 2: Convert to fraction form
    20,736.22/31,117.23 = 8,424.22/x
  3. Step 3: Cross multiply
    20,736.22x = 31,117.23 × 8,424.22
  4. Step 4: Simplify right side
    20,736.22x = 262,138,391.31
  5. Step 5: Solve for x
    x = 262,138,391.31/20,736.22
  6. Step 6: Final answer
    x = 12,641.57

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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.