Home / 11,175.07-15,420.91-6,138.31

Finding the Fourth Proportional to 11,175.07, 15,420.91 and 6,138.31

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Solution

The fourth proportional to 11,175.07, 15,420.91 and 6,138.31 is: 8,470.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,175.07 : 15,420.91 = 6,138.31 : x
  2. Step 2: Convert to fraction form
    11,175.07/15,420.91 = 6,138.31/x
  3. Step 3: Cross multiply
    11,175.07x = 15,420.91 × 6,138.31
  4. Step 4: Simplify right side
    11,175.07x = 94,658,326.06
  5. Step 5: Solve for x
    x = 94,658,326.06/11,175.07
  6. Step 6: Final answer
    x = 8,470.49

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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.