Home / 28,360.88-42,539.60-12,561.27

Finding the Fourth Proportional to 28,360.88, 42,539.60 and 12,561.27

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Solution

The fourth proportional to 28,360.88, 42,539.60 and 12,561.27 is: 18,841.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,360.88 : 42,539.60 = 12,561.27 : x
  2. Step 2: Convert to fraction form
    28,360.88/42,539.60 = 12,561.27/x
  3. Step 3: Cross multiply
    28,360.88x = 42,539.60 × 12,561.27
  4. Step 4: Simplify right side
    28,360.88x = 534,351,338.49
  5. Step 5: Solve for x
    x = 534,351,338.49/28,360.88
  6. Step 6: Final answer
    x = 18,841.14

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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.