Home / 13,566.96-18,719.30-7,900.44

Finding the Fourth Proportional to 13,566.96, 18,719.30 and 7,900.44

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Solution

The fourth proportional to 13,566.96, 18,719.30 and 7,900.44 is: 10,900.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,566.96 : 18,719.30 = 7,900.44 : x
  2. Step 2: Convert to fraction form
    13,566.96/18,719.30 = 7,900.44/x
  3. Step 3: Cross multiply
    13,566.96x = 18,719.30 × 7,900.44
  4. Step 4: Simplify right side
    13,566.96x = 147,890,706.49
  5. Step 5: Solve for x
    x = 147,890,706.49/13,566.96
  6. Step 6: Final answer
    x = 10,900.80

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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.