Home / 20,695.17-31,046.86-8,221.07

Finding the Fourth Proportional to 20,695.17, 31,046.86 and 8,221.07

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Solution

The fourth proportional to 20,695.17, 31,046.86 and 8,221.07 is: 12,333.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.17 : 31,046.86 = 8,221.07 : x
  2. Step 2: Convert to fraction form
    20,695.17/31,046.86 = 8,221.07/x
  3. Step 3: Cross multiply
    20,695.17x = 31,046.86 × 8,221.07
  4. Step 4: Simplify right side
    20,695.17x = 255,238,466.40
  5. Step 5: Solve for x
    x = 255,238,466.40/20,695.17
  6. Step 6: Final answer
    x = 12,333.24

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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.