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Finding the Fourth Proportional to 28,361.22, 42,477.03 and 13,580.52

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Solution

The fourth proportional to 28,361.22, 42,477.03 and 13,580.52 is: 20,339.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,361.22 : 42,477.03 = 13,580.52 : x
  2. Step 2: Convert to fraction form
    28,361.22/42,477.03 = 13,580.52/x
  3. Step 3: Cross multiply
    28,361.22x = 42,477.03 × 13,580.52
  4. Step 4: Simplify right side
    28,361.22x = 576,860,155.46
  5. Step 5: Solve for x
    x = 576,860,155.46/28,361.22
  6. Step 6: Final answer
    x = 20,339.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.