Home / 20,666.13-31,001.49-6,622.86

Finding the Fourth Proportional to 20,666.13, 31,001.49 and 6,622.86

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Solution

The fourth proportional to 20,666.13, 31,001.49 and 6,622.86 is: 9,935.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,666.13 : 31,001.49 = 6,622.86 : x
  2. Step 2: Convert to fraction form
    20,666.13/31,001.49 = 6,622.86/x
  3. Step 3: Cross multiply
    20,666.13x = 31,001.49 × 6,622.86
  4. Step 4: Simplify right side
    20,666.13x = 205,318,528.06
  5. Step 5: Solve for x
    x = 205,318,528.06/20,666.13
  6. Step 6: Final answer
    x = 9,935.03

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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.