Home / 20,114.37-27,739.67-12,561.39

Finding the Fourth Proportional to 20,114.37, 27,739.67 and 12,561.39

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Solution

The fourth proportional to 20,114.37, 27,739.67 and 12,561.39 is: 17,323.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,114.37 : 27,739.67 = 12,561.39 : x
  2. Step 2: Convert to fraction form
    20,114.37/27,739.67 = 12,561.39/x
  3. Step 3: Cross multiply
    20,114.37x = 27,739.67 × 12,561.39
  4. Step 4: Simplify right side
    20,114.37x = 348,448,750.53
  5. Step 5: Solve for x
    x = 348,448,750.53/20,114.37
  6. Step 6: Final answer
    x = 17,323.37

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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.