Home / 11,153.55-15,391.91-6,117.80

Finding the Fourth Proportional to 11,153.55, 15,391.91 and 6,117.80

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Solution

The fourth proportional to 11,153.55, 15,391.91 and 6,117.80 is: 8,442.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,153.55 : 15,391.91 = 6,117.80 : x
  2. Step 2: Convert to fraction form
    11,153.55/15,391.91 = 6,117.80/x
  3. Step 3: Cross multiply
    11,153.55x = 15,391.91 × 6,117.80
  4. Step 4: Simplify right side
    11,153.55x = 94,164,519.45
  5. Step 5: Solve for x
    x = 94,164,519.45/11,153.55
  6. Step 6: Final answer
    x = 8,442.56

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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.