Home / 11,156.95-15,396.64-6,121.63

Finding the Fourth Proportional to 11,156.95, 15,396.64 and 6,121.63

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Solution

The fourth proportional to 11,156.95, 15,396.64 and 6,121.63 is: 8,447.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,156.95 : 15,396.64 = 6,121.63 : x
  2. Step 2: Convert to fraction form
    11,156.95/15,396.64 = 6,121.63/x
  3. Step 3: Cross multiply
    11,156.95x = 15,396.64 × 6,121.63
  4. Step 4: Simplify right side
    11,156.95x = 94,252,456.34
  5. Step 5: Solve for x
    x = 94,252,456.34/11,156.95
  6. Step 6: Final answer
    x = 8,447.87

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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.