Home / 20,983.82-31,495.17-10,602.86

Finding the Fourth Proportional to 20,983.82, 31,495.17 and 10,602.86

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Solution

The fourth proportional to 20,983.82, 31,495.17 and 10,602.86 is: 15,914.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,983.82 : 31,495.17 = 10,602.86 : x
  2. Step 2: Convert to fraction form
    20,983.82/31,495.17 = 10,602.86/x
  3. Step 3: Cross multiply
    20,983.82x = 31,495.17 × 10,602.86
  4. Step 4: Simplify right side
    20,983.82x = 333,938,878.19
  5. Step 5: Solve for x
    x = 333,938,878.19/20,983.82
  6. Step 6: Final answer
    x = 15,914.11

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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.