Home / 11,137.12-15,334.16-9,455.20

Finding the Fourth Proportional to 11,137.12, 15,334.16 and 9,455.20

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Solution

The fourth proportional to 11,137.12, 15,334.16 and 9,455.20 is: 13,018.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,137.12 : 15,334.16 = 9,455.20 : x
  2. Step 2: Convert to fraction form
    11,137.12/15,334.16 = 9,455.20/x
  3. Step 3: Cross multiply
    11,137.12x = 15,334.16 × 9,455.20
  4. Step 4: Simplify right side
    11,137.12x = 144,987,549.63
  5. Step 5: Solve for x
    x = 144,987,549.63/11,137.12
  6. Step 6: Final answer
    x = 13,018.41

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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.