Home / 11,986.90-16,542.21-6,681.58

Finding the Fourth Proportional to 11,986.90, 16,542.21 and 6,681.58

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Solution

The fourth proportional to 11,986.90, 16,542.21 and 6,681.58 is: 9,220.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,986.90 : 16,542.21 = 6,681.58 : x
  2. Step 2: Convert to fraction form
    11,986.90/16,542.21 = 6,681.58/x
  3. Step 3: Cross multiply
    11,986.90x = 16,542.21 × 6,681.58
  4. Step 4: Simplify right side
    11,986.90x = 110,528,099.49
  5. Step 5: Solve for x
    x = 110,528,099.49/11,986.90
  6. Step 6: Final answer
    x = 9,220.74

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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.