Home / 13,320.12-18,383.46-8,017.80

Finding the Fourth Proportional to 13,320.12, 18,383.46 and 8,017.80

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Solution

The fourth proportional to 13,320.12, 18,383.46 and 8,017.80 is: 11,065.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.12 : 18,383.46 = 8,017.80 : x
  2. Step 2: Convert to fraction form
    13,320.12/18,383.46 = 8,017.80/x
  3. Step 3: Cross multiply
    13,320.12x = 18,383.46 × 8,017.80
  4. Step 4: Simplify right side
    13,320.12x = 147,394,905.59
  5. Step 5: Solve for x
    x = 147,394,905.59/13,320.12
  6. Step 6: Final answer
    x = 11,065.58

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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.