Home / 20,602.23-28,431.63-11,651.06

Finding the Fourth Proportional to 20,602.23, 28,431.63 and 11,651.06

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Solution

The fourth proportional to 20,602.23, 28,431.63 and 11,651.06 is: 16,078.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,602.23 : 28,431.63 = 11,651.06 : x
  2. Step 2: Convert to fraction form
    20,602.23/28,431.63 = 11,651.06/x
  3. Step 3: Cross multiply
    20,602.23x = 28,431.63 × 11,651.06
  4. Step 4: Simplify right side
    20,602.23x = 331,258,698.11
  5. Step 5: Solve for x
    x = 331,258,698.11/20,602.23
  6. Step 6: Final answer
    x = 16,078.78

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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.