Home / 13,522.70-18,674.10-12,786.41

Finding the Fourth Proportional to 13,522.70, 18,674.10 and 12,786.41

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Solution

The fourth proportional to 13,522.70, 18,674.10 and 12,786.41 is: 17,657.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,522.70 : 18,674.10 = 12,786.41 : x
  2. Step 2: Convert to fraction form
    13,522.70/18,674.10 = 12,786.41/x
  3. Step 3: Cross multiply
    13,522.70x = 18,674.10 × 12,786.41
  4. Step 4: Simplify right side
    13,522.70x = 238,774,698.98
  5. Step 5: Solve for x
    x = 238,774,698.98/13,522.70
  6. Step 6: Final answer
    x = 17,657.32

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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.