Home / 20,715.74-31,056.74-9,629.41

Finding the Fourth Proportional to 20,715.74, 31,056.74 and 9,629.41

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Solution

The fourth proportional to 20,715.74, 31,056.74 and 9,629.41 is: 14,436.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,715.74 : 31,056.74 = 9,629.41 : x
  2. Step 2: Convert to fraction form
    20,715.74/31,056.74 = 9,629.41/x
  3. Step 3: Cross multiply
    20,715.74x = 31,056.74 × 9,629.41
  4. Step 4: Simplify right side
    20,715.74x = 299,057,879.29
  5. Step 5: Solve for x
    x = 299,057,879.29/20,715.74
  6. Step 6: Final answer
    x = 14,436.26

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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.