Home / 13,025.75-17,975.79-7,720.65

Finding the Fourth Proportional to 13,025.75, 17,975.79 and 7,720.65

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Solution

The fourth proportional to 13,025.75, 17,975.79 and 7,720.65 is: 10,654.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,025.75 : 17,975.79 = 7,720.65 : x
  2. Step 2: Convert to fraction form
    13,025.75/17,975.79 = 7,720.65/x
  3. Step 3: Cross multiply
    13,025.75x = 17,975.79 × 7,720.65
  4. Step 4: Simplify right side
    13,025.75x = 138,784,783.06
  5. Step 5: Solve for x
    x = 138,784,783.06/13,025.75
  6. Step 6: Final answer
    x = 10,654.65

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1.5x scale

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.