Home / 28,489.45-42,734.21-7,429.47

Finding the Fourth Proportional to 28,489.45, 42,734.21 and 7,429.47

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Solution

The fourth proportional to 28,489.45, 42,734.21 and 7,429.47 is: 11,144.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,489.45 : 42,734.21 = 7,429.47 : x
  2. Step 2: Convert to fraction form
    28,489.45/42,734.21 = 7,429.47/x
  3. Step 3: Cross multiply
    28,489.45x = 42,734.21 × 7,429.47
  4. Step 4: Simplify right side
    28,489.45x = 317,492,494.02
  5. Step 5: Solve for x
    x = 317,492,494.02/28,489.45
  6. Step 6: Final answer
    x = 11,144.21

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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.