Home / 20,431.63-28,192.48-11,477.42

Finding the Fourth Proportional to 20,431.63, 28,192.48 and 11,477.42

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Solution

The fourth proportional to 20,431.63, 28,192.48 and 11,477.42 is: 15,837.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,431.63 : 28,192.48 = 11,477.42 : x
  2. Step 2: Convert to fraction form
    20,431.63/28,192.48 = 11,477.42/x
  3. Step 3: Cross multiply
    20,431.63x = 28,192.48 × 11,477.42
  4. Step 4: Simplify right side
    20,431.63x = 323,576,933.80
  5. Step 5: Solve for x
    x = 323,576,933.80/20,431.63
  6. Step 6: Final answer
    x = 15,837.06

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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.