Home / 13,550.72-18,699.40-7,884.64

Finding the Fourth Proportional to 13,550.72, 18,699.40 and 7,884.64

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Solution

The fourth proportional to 13,550.72, 18,699.40 and 7,884.64 is: 10,880.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,550.72 : 18,699.40 = 7,884.64 : x
  2. Step 2: Convert to fraction form
    13,550.72/18,699.40 = 7,884.64/x
  3. Step 3: Cross multiply
    13,550.72x = 18,699.40 × 7,884.64
  4. Step 4: Simplify right side
    13,550.72x = 147,438,037.22
  5. Step 5: Solve for x
    x = 147,438,037.22/13,550.72
  6. Step 6: Final answer
    x = 10,880.46

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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.