Home / 20,090.48-27,719.37-12,538.01

Finding the Fourth Proportional to 20,090.48, 27,719.37 and 12,538.01

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Solution

The fourth proportional to 20,090.48, 27,719.37 and 12,538.01 is: 17,299.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,090.48 : 27,719.37 = 12,538.01 : x
  2. Step 2: Convert to fraction form
    20,090.48/27,719.37 = 12,538.01/x
  3. Step 3: Cross multiply
    20,090.48x = 27,719.37 × 12,538.01
  4. Step 4: Simplify right side
    20,090.48x = 347,545,807.55
  5. Step 5: Solve for x
    x = 347,545,807.55/20,090.48
  6. Step 6: Final answer
    x = 17,299.03

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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.