Home / 20,803.50-28,701.81-11,844.66

Finding the Fourth Proportional to 20,803.50, 28,701.81 and 11,844.66

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Solution

The fourth proportional to 20,803.50, 28,701.81 and 11,844.66 is: 16,341.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,803.50 : 28,701.81 = 11,844.66 : x
  2. Step 2: Convert to fraction form
    20,803.50/28,701.81 = 11,844.66/x
  3. Step 3: Cross multiply
    20,803.50x = 28,701.81 × 11,844.66
  4. Step 4: Simplify right side
    20,803.50x = 339,963,071.28
  5. Step 5: Solve for x
    x = 339,963,071.28/20,803.50
  6. Step 6: Final answer
    x = 16,341.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.