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Finding the Fourth Proportional to 11,404.79, 15,738.30 and 6,368.87

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Solution

The fourth proportional to 11,404.79, 15,738.30 and 6,368.87 is: 8,788.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,404.79 : 15,738.30 = 6,368.87 : x
  2. Step 2: Convert to fraction form
    11,404.79/15,738.30 = 6,368.87/x
  3. Step 3: Cross multiply
    11,404.79x = 15,738.30 × 6,368.87
  4. Step 4: Simplify right side
    11,404.79x = 100,235,108.03
  5. Step 5: Solve for x
    x = 100,235,108.03/11,404.79
  6. Step 6: Final answer
    x = 8,788.86

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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.