Home / 11,156.45-15,395.95-6,121.13

Finding the Fourth Proportional to 11,156.45, 15,395.95 and 6,121.13

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Solution

The fourth proportional to 11,156.45, 15,395.95 and 6,121.13 is: 8,447.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,156.45 : 15,395.95 = 6,121.13 : x
  2. Step 2: Convert to fraction form
    11,156.45/15,395.95 = 6,121.13/x
  3. Step 3: Cross multiply
    11,156.45x = 15,395.95 × 6,121.13
  4. Step 4: Simplify right side
    11,156.45x = 94,240,519.14
  5. Step 5: Solve for x
    x = 94,240,519.14/11,156.45
  6. Step 6: Final answer
    x = 8,447.18

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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.