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Finding the Fourth Proportional to 10,993.86, 15,153.78 and 8,599.68

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Solution

The fourth proportional to 10,993.86, 15,153.78 and 8,599.68 is: 11,853.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,993.86 : 15,153.78 = 8,599.68 : x
  2. Step 2: Convert to fraction form
    10,993.86/15,153.78 = 8,599.68/x
  3. Step 3: Cross multiply
    10,993.86x = 15,153.78 × 8,599.68
  4. Step 4: Simplify right side
    10,993.86x = 130,317,658.79
  5. Step 5: Solve for x
    x = 130,317,658.79/10,993.86
  6. Step 6: Final answer
    x = 11,853.68

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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.