Home / 20,956.02-31,429.17-7,814.58

Finding the Fourth Proportional to 20,956.02, 31,429.17 and 7,814.58

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Solution

The fourth proportional to 20,956.02, 31,429.17 and 7,814.58 is: 11,720.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956.02 : 31,429.17 = 7,814.58 : x
  2. Step 2: Convert to fraction form
    20,956.02/31,429.17 = 7,814.58/x
  3. Step 3: Cross multiply
    20,956.02x = 31,429.17 × 7,814.58
  4. Step 4: Simplify right side
    20,956.02x = 245,605,763.30
  5. Step 5: Solve for x
    x = 245,605,763.30/20,956.02
  6. Step 6: Final answer
    x = 11,720.06

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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.