Home / 11,153.36-15,389.99-7,179.85

Finding the Fourth Proportional to 11,153.36, 15,389.99 and 7,179.85

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Solution

The fourth proportional to 11,153.36, 15,389.99 and 7,179.85 is: 9,907.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,153.36 : 15,389.99 = 7,179.85 : x
  2. Step 2: Convert to fraction form
    11,153.36/15,389.99 = 7,179.85/x
  3. Step 3: Cross multiply
    11,153.36x = 15,389.99 × 7,179.85
  4. Step 4: Simplify right side
    11,153.36x = 110,497,841.51
  5. Step 5: Solve for x
    x = 110,497,841.51/11,153.36
  6. Step 6: Final answer
    x = 9,907.14

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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.