Home / 20,802.18-31,176.09-18,163.02

Finding the Fourth Proportional to 20,802.18, 31,176.09 and 18,163.02

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Solution

The fourth proportional to 20,802.18, 31,176.09 and 18,163.02 is: 27,220.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.18 : 31,176.09 = 18,163.02 : x
  2. Step 2: Convert to fraction form
    20,802.18/31,176.09 = 18,163.02/x
  3. Step 3: Cross multiply
    20,802.18x = 31,176.09 × 18,163.02
  4. Step 4: Simplify right side
    20,802.18x = 566,251,946.19
  5. Step 5: Solve for x
    x = 566,251,946.19/20,802.18
  6. Step 6: Final answer
    x = 27,220.80

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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.