Home / 12,122.40-16,733.18-10,243.94

Finding the Fourth Proportional to 12,122.40, 16,733.18 and 10,243.94

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Solution

The fourth proportional to 12,122.40, 16,733.18 and 10,243.94 is: 14,140.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,122.40 : 16,733.18 = 10,243.94 : x
  2. Step 2: Convert to fraction form
    12,122.40/16,733.18 = 10,243.94/x
  3. Step 3: Cross multiply
    12,122.40x = 16,733.18 × 10,243.94
  4. Step 4: Simplify right side
    12,122.40x = 171,413,682.54
  5. Step 5: Solve for x
    x = 171,413,682.54/12,122.40
  6. Step 6: Final answer
    x = 14,140.24

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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.