Home / 20,926.16-31,384.44-12,495.04

Finding the Fourth Proportional to 20,926.16, 31,384.44 and 12,495.04

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Solution

The fourth proportional to 20,926.16, 31,384.44 and 12,495.04 is: 18,739.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926.16 : 31,384.44 = 12,495.04 : x
  2. Step 2: Convert to fraction form
    20,926.16/31,384.44 = 12,495.04/x
  3. Step 3: Cross multiply
    20,926.16x = 31,384.44 × 12,495.04
  4. Step 4: Simplify right side
    20,926.16x = 392,149,833.18
  5. Step 5: Solve for x
    x = 392,149,833.18/20,926.16
  6. Step 6: Final answer
    x = 18,739.69

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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.