Home / 20,946.57-31,428.56-8,475.41

Finding the Fourth Proportional to 20,946.57, 31,428.56 and 8,475.41

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Solution

The fourth proportional to 20,946.57, 31,428.56 and 8,475.41 is: 12,716.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,946.57 : 31,428.56 = 8,475.41 : x
  2. Step 2: Convert to fraction form
    20,946.57/31,428.56 = 8,475.41/x
  3. Step 3: Cross multiply
    20,946.57x = 31,428.56 × 8,475.41
  4. Step 4: Simplify right side
    20,946.57x = 266,369,732.19
  5. Step 5: Solve for x
    x = 266,369,732.19/20,946.57
  6. Step 6: Final answer
    x = 12,716.63

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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.