Home / 20,736.52-31,106.30-8,878.73

Finding the Fourth Proportional to 20,736.52, 31,106.30 and 8,878.73

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Solution

The fourth proportional to 20,736.52, 31,106.30 and 8,878.73 is: 13,318.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.52 : 31,106.30 = 8,878.73 : x
  2. Step 2: Convert to fraction form
    20,736.52/31,106.30 = 8,878.73/x
  3. Step 3: Cross multiply
    20,736.52x = 31,106.30 × 8,878.73
  4. Step 4: Simplify right side
    20,736.52x = 276,184,239.07
  5. Step 5: Solve for x
    x = 276,184,239.07/20,736.52
  6. Step 6: Final answer
    x = 13,318.74

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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.