Home / 11,986.99-16,541.81-6,681.49

Finding the Fourth Proportional to 11,986.99, 16,541.81 and 6,681.49

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Solution

The fourth proportional to 11,986.99, 16,541.81 and 6,681.49 is: 9,220.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,986.99 : 16,541.81 = 6,681.49 : x
  2. Step 2: Convert to fraction form
    11,986.99/16,541.81 = 6,681.49/x
  3. Step 3: Cross multiply
    11,986.99x = 16,541.81 × 6,681.49
  4. Step 4: Simplify right side
    11,986.99x = 110,523,938.10
  5. Step 5: Solve for x
    x = 110,523,938.10/11,986.99
  6. Step 6: Final answer
    x = 9,220.32

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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.