Home / 13,330.80-19,986.12-8,064.64

Finding the Fourth Proportional to 13,330.80, 19,986.12 and 8,064.64

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Solution

The fourth proportional to 13,330.80, 19,986.12 and 8,064.64 is: 12,090.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,330.80 : 19,986.12 = 8,064.64 : x
  2. Step 2: Convert to fraction form
    13,330.80/19,986.12 = 8,064.64/x
  3. Step 3: Cross multiply
    13,330.80x = 19,986.12 × 8,064.64
  4. Step 4: Simplify right side
    13,330.80x = 161,180,862.80
  5. Step 5: Solve for x
    x = 161,180,862.80/13,330.80
  6. Step 6: Final answer
    x = 12,090.86

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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.