Home / 20,801.61-31,203.63-6,761.68

Finding the Fourth Proportional to 20,801.61, 31,203.63 and 6,761.68

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Solution

The fourth proportional to 20,801.61, 31,203.63 and 6,761.68 is: 10,142.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,801.61 : 31,203.63 = 6,761.68 : x
  2. Step 2: Convert to fraction form
    20,801.61/31,203.63 = 6,761.68/x
  3. Step 3: Cross multiply
    20,801.61x = 31,203.63 × 6,761.68
  4. Step 4: Simplify right side
    20,801.61x = 210,988,882.89
  5. Step 5: Solve for x
    x = 210,988,882.89/20,801.61
  6. Step 6: Final answer
    x = 10,142.91

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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.