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Finding the Fourth Proportional to 8,923.48, 13,290.96 and 8,455.12

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Solution

The fourth proportional to 8,923.48, 13,290.96 and 8,455.12 is: 12,593.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,923.48 : 13,290.96 = 8,455.12 : x
  2. Step 2: Convert to fraction form
    8,923.48/13,290.96 = 8,455.12/x
  3. Step 3: Cross multiply
    8,923.48x = 13,290.96 × 8,455.12
  4. Step 4: Simplify right side
    8,923.48x = 112,376,661.72
  5. Step 5: Solve for x
    x = 112,376,661.72/8,923.48
  6. Step 6: Final answer
    x = 12,593.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.