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Finding the Fourth Proportional to 12,304.51, 16,985.90 and 8,055.79

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Solution

The fourth proportional to 12,304.51, 16,985.90 and 8,055.79 is: 11,120.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,304.51 : 16,985.90 = 8,055.79 : x
  2. Step 2: Convert to fraction form
    12,304.51/16,985.90 = 8,055.79/x
  3. Step 3: Cross multiply
    12,304.51x = 16,985.90 × 8,055.79
  4. Step 4: Simplify right side
    12,304.51x = 136,834,821.04
  5. Step 5: Solve for x
    x = 136,834,821.04/12,304.51
  6. Step 6: Final answer
    x = 11,120.71

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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.