Home / 20,916.44-31,377.81-6,123.50

Finding the Fourth Proportional to 20,916.44, 31,377.81 and 6,123.50

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Solution

The fourth proportional to 20,916.44, 31,377.81 and 6,123.50 is: 9,186.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,916.44 : 31,377.81 = 6,123.50 : x
  2. Step 2: Convert to fraction form
    20,916.44/31,377.81 = 6,123.50/x
  3. Step 3: Cross multiply
    20,916.44x = 31,377.81 × 6,123.50
  4. Step 4: Simplify right side
    20,916.44x = 192,142,019.54
  5. Step 5: Solve for x
    x = 192,142,019.54/20,916.44
  6. Step 6: Final answer
    x = 9,186.17

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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.