Home / 20,823.84-31,235.49-5,028.75

Finding the Fourth Proportional to 20,823.84, 31,235.49 and 5,028.75

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Solution

The fourth proportional to 20,823.84, 31,235.49 and 5,028.75 is: 7,543.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,823.84 : 31,235.49 = 5,028.75 : x
  2. Step 2: Convert to fraction form
    20,823.84/31,235.49 = 5,028.75/x
  3. Step 3: Cross multiply
    20,823.84x = 31,235.49 × 5,028.75
  4. Step 4: Simplify right side
    20,823.84x = 157,075,470.34
  5. Step 5: Solve for x
    x = 157,075,470.34/20,823.84
  6. Step 6: Final answer
    x = 7,543.06

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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.