Home / 13,245.40-18,270.54-7,864.18

Finding the Fourth Proportional to 13,245.40, 18,270.54 and 7,864.18

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Solution

The fourth proportional to 13,245.40, 18,270.54 and 7,864.18 is: 10,847.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.40 : 18,270.54 = 7,864.18 : x
  2. Step 2: Convert to fraction form
    13,245.40/18,270.54 = 7,864.18/x
  3. Step 3: Cross multiply
    13,245.40x = 18,270.54 × 7,864.18
  4. Step 4: Simplify right side
    13,245.40x = 143,682,798.85
  5. Step 5: Solve for x
    x = 143,682,798.85/13,245.40
  6. Step 6: Final answer
    x = 10,847.75

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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.