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Finding the Fourth Proportional to 12,202.16, 16,840.78 and 7,726.32

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Solution

The fourth proportional to 12,202.16, 16,840.78 and 7,726.32 is: 10,663.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,202.16 : 16,840.78 = 7,726.32 : x
  2. Step 2: Convert to fraction form
    12,202.16/16,840.78 = 7,726.32/x
  3. Step 3: Cross multiply
    12,202.16x = 16,840.78 × 7,726.32
  4. Step 4: Simplify right side
    12,202.16x = 130,117,255.33
  5. Step 5: Solve for x
    x = 130,117,255.33/12,202.16
  6. Step 6: Final answer
    x = 10,663.46

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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.