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Finding the Fourth Proportional to 12,223.49, 16,868.81 and 6,918.19

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Solution

The fourth proportional to 12,223.49, 16,868.81 and 6,918.19 is: 9,547.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,223.49 : 16,868.81 = 6,918.19 : x
  2. Step 2: Convert to fraction form
    12,223.49/16,868.81 = 6,918.19/x
  3. Step 3: Cross multiply
    12,223.49x = 16,868.81 × 6,918.19
  4. Step 4: Simplify right side
    12,223.49x = 116,701,548.31
  5. Step 5: Solve for x
    x = 116,701,548.31/12,223.49
  6. Step 6: Final answer
    x = 9,547.32

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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.