Home / 14,435.75-19,921.35-7,811.75

Finding the Fourth Proportional to 14,435.75, 19,921.35 and 7,811.75

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Solution

The fourth proportional to 14,435.75, 19,921.35 and 7,811.75 is: 10,780.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,435.75 : 19,921.35 = 7,811.75 : x
  2. Step 2: Convert to fraction form
    14,435.75/19,921.35 = 7,811.75/x
  3. Step 3: Cross multiply
    14,435.75x = 19,921.35 × 7,811.75
  4. Step 4: Simplify right side
    14,435.75x = 155,620,566.80
  5. Step 5: Solve for x
    x = 155,620,566.80/14,435.75
  6. Step 6: Final answer
    x = 10,780.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.