Home / 20,904.36-31,363.74-17,807.82

Finding the Fourth Proportional to 20,904.36, 31,363.74 and 17,807.82

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Solution

The fourth proportional to 20,904.36, 31,363.74 and 17,807.82 is: 26,717.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.36 : 31,363.74 = 17,807.82 : x
  2. Step 2: Convert to fraction form
    20,904.36/31,363.74 = 17,807.82/x
  3. Step 3: Cross multiply
    20,904.36x = 31,363.74 × 17,807.82
  4. Step 4: Simplify right side
    20,904.36x = 558,519,836.45
  5. Step 5: Solve for x
    x = 558,519,836.45/20,904.36
  6. Step 6: Final answer
    x = 26,717.86

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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.