Home / 20,881.02-31,305.04-10,354.66

Finding the Fourth Proportional to 20,881.02, 31,305.04 and 10,354.66

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Solution

The fourth proportional to 20,881.02, 31,305.04 and 10,354.66 is: 15,523.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881.02 : 31,305.04 = 10,354.66 : x
  2. Step 2: Convert to fraction form
    20,881.02/31,305.04 = 10,354.66/x
  3. Step 3: Cross multiply
    20,881.02x = 31,305.04 × 10,354.66
  4. Step 4: Simplify right side
    20,881.02x = 324,153,045.49
  5. Step 5: Solve for x
    x = 324,153,045.49/20,881.02
  6. Step 6: Final answer
    x = 15,523.81

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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.