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Finding the Fourth Proportional to 11,152.88, 15,390.87 and 6,116.85

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Solution

The fourth proportional to 11,152.88, 15,390.87 and 6,116.85 is: 8,441.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,152.88 : 15,390.87 = 6,116.85 : x
  2. Step 2: Convert to fraction form
    11,152.88/15,390.87 = 6,116.85/x
  3. Step 3: Cross multiply
    11,152.88x = 15,390.87 × 6,116.85
  4. Step 4: Simplify right side
    11,152.88x = 94,143,643.16
  5. Step 5: Solve for x
    x = 94,143,643.16/11,152.88
  6. Step 6: Final answer
    x = 8,441.20

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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.