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Finding the Fourth Proportional to 11,445.54, 15,794.08 and 6,340.71

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Solution

The fourth proportional to 11,445.54, 15,794.08 and 6,340.71 is: 8,749.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,445.54 : 15,794.08 = 6,340.71 : x
  2. Step 2: Convert to fraction form
    11,445.54/15,794.08 = 6,340.71/x
  3. Step 3: Cross multiply
    11,445.54x = 15,794.08 × 6,340.71
  4. Step 4: Simplify right side
    11,445.54x = 100,145,681.00
  5. Step 5: Solve for x
    x = 100,145,681.00/11,445.54
  6. Step 6: Final answer
    x = 8,749.76

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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.