Home / 19,271.40-28,907.10-5,418.60

Finding the Fourth Proportional to 19,271.40, 28,907.10 and 5,418.60

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Solution

The fourth proportional to 19,271.40, 28,907.10 and 5,418.60 is: 8,127.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,271.40 : 28,907.10 = 5,418.60 : x
  2. Step 2: Convert to fraction form
    19,271.40/28,907.10 = 5,418.60/x
  3. Step 3: Cross multiply
    19,271.40x = 28,907.10 × 5,418.60
  4. Step 4: Simplify right side
    19,271.40x = 156,636,012.06
  5. Step 5: Solve for x
    x = 156,636,012.06/19,271.40
  6. Step 6: Final answer
    x = 8,127.90

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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.