Home / 20,347.91-28,072.88-16,099.66

Finding the Fourth Proportional to 20,347.91, 28,072.88 and 16,099.66

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Solution

The fourth proportional to 20,347.91, 28,072.88 and 16,099.66 is: 22,211.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,347.91 : 28,072.88 = 16,099.66 : x
  2. Step 2: Convert to fraction form
    20,347.91/28,072.88 = 16,099.66/x
  3. Step 3: Cross multiply
    20,347.91x = 28,072.88 × 16,099.66
  4. Step 4: Simplify right side
    20,347.91x = 451,963,838.19
  5. Step 5: Solve for x
    x = 451,963,838.19/20,347.91
  6. Step 6: Final answer
    x = 22,211.81

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1.5x scale

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.