Home / 20,738.77-31,095.64-8,260.72

Finding the Fourth Proportional to 20,738.77, 31,095.64 and 8,260.72

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Solution

The fourth proportional to 20,738.77, 31,095.64 and 8,260.72 is: 12,386.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.77 : 31,095.64 = 8,260.72 : x
  2. Step 2: Convert to fraction form
    20,738.77/31,095.64 = 8,260.72/x
  3. Step 3: Cross multiply
    20,738.77x = 31,095.64 × 8,260.72
  4. Step 4: Simplify right side
    20,738.77x = 256,872,375.26
  5. Step 5: Solve for x
    x = 256,872,375.26/20,738.77
  6. Step 6: Final answer
    x = 12,386.09

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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.