Home / 20,957.24-31,429.12-6,914.08

Finding the Fourth Proportional to 20,957.24, 31,429.12 and 6,914.08

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Solution

The fourth proportional to 20,957.24, 31,429.12 and 6,914.08 is: 10,368.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,957.24 : 31,429.12 = 6,914.08 : x
  2. Step 2: Convert to fraction form
    20,957.24/31,429.12 = 6,914.08/x
  3. Step 3: Cross multiply
    20,957.24x = 31,429.12 × 6,914.08
  4. Step 4: Simplify right side
    20,957.24x = 217,303,450.01
  5. Step 5: Solve for x
    x = 217,303,450.01/20,957.24
  6. Step 6: Final answer
    x = 10,368.90

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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.