Home / 13,190.49-18,200.43-7,884.18

Finding the Fourth Proportional to 13,190.49, 18,200.43 and 7,884.18

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Solution

The fourth proportional to 13,190.49, 18,200.43 and 7,884.18 is: 10,878.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.49 : 18,200.43 = 7,884.18 : x
  2. Step 2: Convert to fraction form
    13,190.49/18,200.43 = 7,884.18/x
  3. Step 3: Cross multiply
    13,190.49x = 18,200.43 × 7,884.18
  4. Step 4: Simplify right side
    13,190.49x = 143,495,466.20
  5. Step 5: Solve for x
    x = 143,495,466.20/13,190.49
  6. Step 6: Final answer
    x = 10,878.71

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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.