Home / 20,719.84-31,052.88-9,631.84

Finding the Fourth Proportional to 20,719.84, 31,052.88 and 9,631.84

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Solution

The fourth proportional to 20,719.84, 31,052.88 and 9,631.84 is: 14,435.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719.84 : 31,052.88 = 9,631.84 : x
  2. Step 2: Convert to fraction form
    20,719.84/31,052.88 = 9,631.84/x
  3. Step 3: Cross multiply
    20,719.84x = 31,052.88 × 9,631.84
  4. Step 4: Simplify right side
    20,719.84x = 299,096,371.70
  5. Step 5: Solve for x
    x = 299,096,371.70/20,719.84
  6. Step 6: Final answer
    x = 14,435.26

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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.