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Finding the Fourth Proportional to 8,918.24, 13,298.85 and 8,294.94

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Solution

The fourth proportional to 8,918.24, 13,298.85 and 8,294.94 is: 12,369.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.24 : 13,298.85 = 8,294.94 : x
  2. Step 2: Convert to fraction form
    8,918.24/13,298.85 = 8,294.94/x
  3. Step 3: Cross multiply
    8,918.24x = 13,298.85 × 8,294.94
  4. Step 4: Simplify right side
    8,918.24x = 110,313,162.82
  5. Step 5: Solve for x
    x = 110,313,162.82/8,918.24
  6. Step 6: Final answer
    x = 12,369.39

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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.