Home / 19,431.78-29,140.38-6,280.62

Finding the Fourth Proportional to 19,431.78, 29,140.38 and 6,280.62

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Solution

The fourth proportional to 19,431.78, 29,140.38 and 6,280.62 is: 9,418.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,431.78 : 29,140.38 = 6,280.62 : x
  2. Step 2: Convert to fraction form
    19,431.78/29,140.38 = 6,280.62/x
  3. Step 3: Cross multiply
    19,431.78x = 29,140.38 × 6,280.62
  4. Step 4: Simplify right side
    19,431.78x = 183,019,653.44
  5. Step 5: Solve for x
    x = 183,019,653.44/19,431.78
  6. Step 6: Final answer
    x = 9,418.57

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1.5x scale

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.