Home / 13,880.87-19,143.48-9,839.70

Finding the Fourth Proportional to 13,880.87, 19,143.48 and 9,839.70

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Solution

The fourth proportional to 13,880.87, 19,143.48 and 9,839.70 is: 13,570.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,880.87 : 19,143.48 = 9,839.70 : x
  2. Step 2: Convert to fraction form
    13,880.87/19,143.48 = 9,839.70/x
  3. Step 3: Cross multiply
    13,880.87x = 19,143.48 × 9,839.70
  4. Step 4: Simplify right side
    13,880.87x = 188,366,137.05
  5. Step 5: Solve for x
    x = 188,366,137.05/13,880.87
  6. Step 6: Final answer
    x = 13,570.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.