Home / 13,526.70-18,679.62-12,790.41

Finding the Fourth Proportional to 13,526.70, 18,679.62 and 12,790.41

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Solution

The fourth proportional to 13,526.70, 18,679.62 and 12,790.41 is: 17,662.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,526.70 : 18,679.62 = 12,790.41 : x
  2. Step 2: Convert to fraction form
    13,526.70/18,679.62 = 12,790.41/x
  3. Step 3: Cross multiply
    13,526.70x = 18,679.62 × 12,790.41
  4. Step 4: Simplify right side
    13,526.70x = 238,919,998.44
  5. Step 5: Solve for x
    x = 238,919,998.44/13,526.70
  6. Step 6: Final answer
    x = 17,662.84

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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.