Home / 20,752.22-31,130.04-8,747.83

Finding the Fourth Proportional to 20,752.22, 31,130.04 and 8,747.83

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Solution

The fourth proportional to 20,752.22, 31,130.04 and 8,747.83 is: 13,122.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,752.22 : 31,130.04 = 8,747.83 : x
  2. Step 2: Convert to fraction form
    20,752.22/31,130.04 = 8,747.83/x
  3. Step 3: Cross multiply
    20,752.22x = 31,130.04 × 8,747.83
  4. Step 4: Simplify right side
    20,752.22x = 272,320,297.81
  5. Step 5: Solve for x
    x = 272,320,297.81/20,752.22
  6. Step 6: Final answer
    x = 13,122.47

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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.