Home / 11,378.88-17,039.04-9,147.20

Finding the Fourth Proportional to 11,378.88, 17,039.04 and 9,147.20

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Solution

The fourth proportional to 11,378.88, 17,039.04 and 9,147.20 is: 13,697.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,378.88 : 17,039.04 = 9,147.20 : x
  2. Step 2: Convert to fraction form
    11,378.88/17,039.04 = 9,147.20/x
  3. Step 3: Cross multiply
    11,378.88x = 17,039.04 × 9,147.20
  4. Step 4: Simplify right side
    11,378.88x = 155,859,506.69
  5. Step 5: Solve for x
    x = 155,859,506.69/11,378.88
  6. Step 6: Final answer
    x = 13,697.26

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1.5x scale

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.