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Finding the Fourth Proportional to 11,152.95, 15,394.37 and 6,440.37

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Solution

The fourth proportional to 11,152.95, 15,394.37 and 6,440.37 is: 8,889.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,152.95 : 15,394.37 = 6,440.37 : x
  2. Step 2: Convert to fraction form
    11,152.95/15,394.37 = 6,440.37/x
  3. Step 3: Cross multiply
    11,152.95x = 15,394.37 × 6,440.37
  4. Step 4: Simplify right side
    11,152.95x = 99,145,406.52
  5. Step 5: Solve for x
    x = 99,145,406.52/11,152.95
  6. Step 6: Final answer
    x = 8,889.61

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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.