Home / 12,291.67-16,963.96-6,987.28

Finding the Fourth Proportional to 12,291.67, 16,963.96 and 6,987.28

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Solution

The fourth proportional to 12,291.67, 16,963.96 and 6,987.28 is: 9,643.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,291.67 : 16,963.96 = 6,987.28 : x
  2. Step 2: Convert to fraction form
    12,291.67/16,963.96 = 6,987.28/x
  3. Step 3: Cross multiply
    12,291.67x = 16,963.96 × 6,987.28
  4. Step 4: Simplify right side
    12,291.67x = 118,531,938.43
  5. Step 5: Solve for x
    x = 118,531,938.43/12,291.67
  6. Step 6: Final answer
    x = 9,643.27

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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.