Home / 20,807.10-31,193.10-9,707.94

Finding the Fourth Proportional to 20,807.10, 31,193.10 and 9,707.94

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Solution

The fourth proportional to 20,807.10, 31,193.10 and 9,707.94 is: 14,553.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807.10 : 31,193.10 = 9,707.94 : x
  2. Step 2: Convert to fraction form
    20,807.10/31,193.10 = 9,707.94/x
  3. Step 3: Cross multiply
    20,807.10x = 31,193.10 × 9,707.94
  4. Step 4: Simplify right side
    20,807.10x = 302,820,743.21
  5. Step 5: Solve for x
    x = 302,820,743.21/20,807.10
  6. Step 6: Final answer
    x = 14,553.72

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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.