Home / 11,153.07-15,391.44-6,117.78

Finding the Fourth Proportional to 11,153.07, 15,391.44 and 6,117.78

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Solution

The fourth proportional to 11,153.07, 15,391.44 and 6,117.78 is: 8,442.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,153.07 : 15,391.44 = 6,117.78 : x
  2. Step 2: Convert to fraction form
    11,153.07/15,391.44 = 6,117.78/x
  3. Step 3: Cross multiply
    11,153.07x = 15,391.44 × 6,117.78
  4. Step 4: Simplify right side
    11,153.07x = 94,161,443.80
  5. Step 5: Solve for x
    x = 94,161,443.80/11,153.07
  6. Step 6: Final answer
    x = 8,442.65

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Double scale
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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.