Home / 20,956.06-31,434.00-8,475.93

Finding the Fourth Proportional to 20,956.06, 31,434.00 and 8,475.93

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Solution

The fourth proportional to 20,956.06, 31,434.00 and 8,475.93 is: 12,713.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956.06 : 31,434.00 = 8,475.93 : x
  2. Step 2: Convert to fraction form
    20,956.06/31,434.00 = 8,475.93/x
  3. Step 3: Cross multiply
    20,956.06x = 31,434.00 × 8,475.93
  4. Step 4: Simplify right side
    20,956.06x = 266,432,351.84
  5. Step 5: Solve for x
    x = 266,432,351.84/20,956.06
  6. Step 6: Final answer
    x = 12,713.86

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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.