Home / 18,090.44-24,967.76-12,420.48

Finding the Fourth Proportional to 18,090.44, 24,967.76 and 12,420.48

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Solution

The fourth proportional to 18,090.44, 24,967.76 and 12,420.48 is: 17,142.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,090.44 : 24,967.76 = 12,420.48 : x
  2. Step 2: Convert to fraction form
    18,090.44/24,967.76 = 12,420.48/x
  3. Step 3: Cross multiply
    18,090.44x = 24,967.76 × 12,420.48
  4. Step 4: Simplify right side
    18,090.44x = 310,111,563.72
  5. Step 5: Solve for x
    x = 310,111,563.72/18,090.44
  6. Step 6: Final answer
    x = 17,142.29

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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.