Home / 13,257.07-18,299.67-8,782.27

Finding the Fourth Proportional to 13,257.07, 18,299.67 and 8,782.27

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Solution

The fourth proportional to 13,257.07, 18,299.67 and 8,782.27 is: 12,122.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,257.07 : 18,299.67 = 8,782.27 : x
  2. Step 2: Convert to fraction form
    13,257.07/18,299.67 = 8,782.27/x
  3. Step 3: Cross multiply
    13,257.07x = 18,299.67 × 8,782.27
  4. Step 4: Simplify right side
    13,257.07x = 160,712,716.50
  5. Step 5: Solve for x
    x = 160,712,716.50/13,257.07
  6. Step 6: Final answer
    x = 12,122.80

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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.