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Finding the Fourth Proportional to 12,223.84, 16,869.36 and 6,918.88

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Solution

The fourth proportional to 12,223.84, 16,869.36 and 6,918.88 is: 9,548.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,223.84 : 16,869.36 = 6,918.88 : x
  2. Step 2: Convert to fraction form
    12,223.84/16,869.36 = 6,918.88/x
  3. Step 3: Cross multiply
    12,223.84x = 16,869.36 × 6,918.88
  4. Step 4: Simplify right side
    12,223.84x = 116,717,077.52
  5. Step 5: Solve for x
    x = 116,717,077.52/12,223.84
  6. Step 6: Final answer
    x = 9,548.32

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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.