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Finding the Fourth Proportional to 11,870.88, 17,797.60 and 6,866.20

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Solution

The fourth proportional to 11,870.88, 17,797.60 and 6,866.20 is: 10,294.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,870.88 : 17,797.60 = 6,866.20 : x
  2. Step 2: Convert to fraction form
    11,870.88/17,797.60 = 6,866.20/x
  3. Step 3: Cross multiply
    11,870.88x = 17,797.60 × 6,866.20
  4. Step 4: Simplify right side
    11,870.88x = 122,201,881.12
  5. Step 5: Solve for x
    x = 122,201,881.12/11,870.88
  6. Step 6: Final answer
    x = 10,294.26

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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.