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Finding the Fourth Proportional to 12,392.84, 17,102.40 and 6,803.84

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Solution

The fourth proportional to 12,392.84, 17,102.40 and 6,803.84 is: 9,389.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,392.84 : 17,102.40 = 6,803.84 : x
  2. Step 2: Convert to fraction form
    12,392.84/17,102.40 = 6,803.84/x
  3. Step 3: Cross multiply
    12,392.84x = 17,102.40 × 6,803.84
  4. Step 4: Simplify right side
    12,392.84x = 116,361,993.22
  5. Step 5: Solve for x
    x = 116,361,993.22/12,392.84
  6. Step 6: Final answer
    x = 9,389.45

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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.