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Finding the Fourth Proportional to 8,686.35, 13,023.35 and 7,039.27

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Solution

The fourth proportional to 8,686.35, 13,023.35 and 7,039.27 is: 10,553.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.35 : 13,023.35 = 7,039.27 : x
  2. Step 2: Convert to fraction form
    8,686.35/13,023.35 = 7,039.27/x
  3. Step 3: Cross multiply
    8,686.35x = 13,023.35 × 7,039.27
  4. Step 4: Simplify right side
    8,686.35x = 91,674,811.18
  5. Step 5: Solve for x
    x = 91,674,811.18/8,686.35
  6. Step 6: Final answer
    x = 10,553.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.