Home / 12,321.51-16,985.88-9,804.66

Finding the Fourth Proportional to 12,321.51, 16,985.88 and 9,804.66

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Solution

The fourth proportional to 12,321.51, 16,985.88 and 9,804.66 is: 13,516.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,321.51 : 16,985.88 = 9,804.66 : x
  2. Step 2: Convert to fraction form
    12,321.51/16,985.88 = 9,804.66/x
  3. Step 3: Cross multiply
    12,321.51x = 16,985.88 × 9,804.66
  4. Step 4: Simplify right side
    12,321.51x = 166,540,778.20
  5. Step 5: Solve for x
    x = 166,540,778.20/12,321.51
  6. Step 6: Final answer
    x = 13,516.26

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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.