Home / 13,112.70-18,053.73-12,218.46

Finding the Fourth Proportional to 13,112.70, 18,053.73 and 12,218.46

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Solution

The fourth proportional to 13,112.70, 18,053.73 and 12,218.46 is: 16,822.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,112.70 : 18,053.73 = 12,218.46 : x
  2. Step 2: Convert to fraction form
    13,112.70/18,053.73 = 12,218.46/x
  3. Step 3: Cross multiply
    13,112.70x = 18,053.73 × 12,218.46
  4. Step 4: Simplify right side
    13,112.70x = 220,588,777.86
  5. Step 5: Solve for x
    x = 220,588,777.86/13,112.70
  6. Step 6: Final answer
    x = 16,822.53

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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.