Home / 20,868.53-31,303.03-7,542.53

Finding the Fourth Proportional to 20,868.53, 31,303.03 and 7,542.53

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Solution

The fourth proportional to 20,868.53, 31,303.03 and 7,542.53 is: 11,313.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868.53 : 31,303.03 = 7,542.53 : x
  2. Step 2: Convert to fraction form
    20,868.53/31,303.03 = 7,542.53/x
  3. Step 3: Cross multiply
    20,868.53x = 31,303.03 × 7,542.53
  4. Step 4: Simplify right side
    20,868.53x = 236,104,196.32
  5. Step 5: Solve for x
    x = 236,104,196.32/20,868.53
  6. Step 6: Final answer
    x = 11,313.89

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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.