Home / 19,147.66-28,692.15-12,884.50

Finding the Fourth Proportional to 19,147.66, 28,692.15 and 12,884.50

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Solution

The fourth proportional to 19,147.66, 28,692.15 and 12,884.50 is: 19,307.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,147.66 : 28,692.15 = 12,884.50 : x
  2. Step 2: Convert to fraction form
    19,147.66/28,692.15 = 12,884.50/x
  3. Step 3: Cross multiply
    19,147.66x = 28,692.15 × 12,884.50
  4. Step 4: Simplify right side
    19,147.66x = 369,684,006.68
  5. Step 5: Solve for x
    x = 369,684,006.68/19,147.66
  6. Step 6: Final answer
    x = 19,307.01

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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.