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Finding the Fourth Proportional to 12,323.97, 18,434.99 and 9,339.93

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Solution

The fourth proportional to 12,323.97, 18,434.99 and 9,339.93 is: 13,971.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,323.97 : 18,434.99 = 9,339.93 : x
  2. Step 2: Convert to fraction form
    12,323.97/18,434.99 = 9,339.93/x
  3. Step 3: Cross multiply
    12,323.97x = 18,434.99 × 9,339.93
  4. Step 4: Simplify right side
    12,323.97x = 172,181,516.15
  5. Step 5: Solve for x
    x = 172,181,516.15/12,323.97
  6. Step 6: Final answer
    x = 13,971.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.