Home / 28,290.97-42,421.87-11,647.90

Finding the Fourth Proportional to 28,290.97, 42,421.87 and 11,647.90

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Solution

The fourth proportional to 28,290.97, 42,421.87 and 11,647.90 is: 17,465.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,290.97 : 42,421.87 = 11,647.90 : x
  2. Step 2: Convert to fraction form
    28,290.97/42,421.87 = 11,647.90/x
  3. Step 3: Cross multiply
    28,290.97x = 42,421.87 × 11,647.90
  4. Step 4: Simplify right side
    28,290.97x = 494,125,429.22
  5. Step 5: Solve for x
    x = 494,125,429.22/28,290.97
  6. Step 6: Final answer
    x = 17,465.84

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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.