Home / 13,160.07-18,161.25-7,191.69

Finding the Fourth Proportional to 13,160.07, 18,161.25 and 7,191.69

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Solution

The fourth proportional to 13,160.07, 18,161.25 and 7,191.69 is: 9,924.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,160.07 : 18,161.25 = 7,191.69 : x
  2. Step 2: Convert to fraction form
    13,160.07/18,161.25 = 7,191.69/x
  3. Step 3: Cross multiply
    13,160.07x = 18,161.25 × 7,191.69
  4. Step 4: Simplify right side
    13,160.07x = 130,610,080.01
  5. Step 5: Solve for x
    x = 130,610,080.01/13,160.07
  6. Step 6: Final answer
    x = 9,924.73

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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.