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Finding the Fourth Proportional to 12,894.39, 17,795.01 and 7,228.86

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Solution

The fourth proportional to 12,894.39, 17,795.01 and 7,228.86 is: 9,976.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,894.39 : 17,795.01 = 7,228.86 : x
  2. Step 2: Convert to fraction form
    12,894.39/17,795.01 = 7,228.86/x
  3. Step 3: Cross multiply
    12,894.39x = 17,795.01 × 7,228.86
  4. Step 4: Simplify right side
    12,894.39x = 128,637,635.99
  5. Step 5: Solve for x
    x = 128,637,635.99/12,894.39
  6. Step 6: Final answer
    x = 9,976.25

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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.