Home / 12,698.18-17,528.40-11,369.60

Finding the Fourth Proportional to 12,698.18, 17,528.40 and 11,369.60

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Solution

The fourth proportional to 12,698.18, 17,528.40 and 11,369.60 is: 15,694.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,698.18 : 17,528.40 = 11,369.60 : x
  2. Step 2: Convert to fraction form
    12,698.18/17,528.40 = 11,369.60/x
  3. Step 3: Cross multiply
    12,698.18x = 17,528.40 × 11,369.60
  4. Step 4: Simplify right side
    12,698.18x = 199,290,896.64
  5. Step 5: Solve for x
    x = 199,290,896.64/12,698.18
  6. Step 6: Final answer
    x = 15,694.45

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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.