Home / 15,450.40-21,325.04-8,739.92

Finding the Fourth Proportional to 15,450.40, 21,325.04 and 8,739.92

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Solution

The fourth proportional to 15,450.40, 21,325.04 and 8,739.92 is: 12,063.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,450.40 : 21,325.04 = 8,739.92 : x
  2. Step 2: Convert to fraction form
    15,450.40/21,325.04 = 8,739.92/x
  3. Step 3: Cross multiply
    15,450.40x = 21,325.04 × 8,739.92
  4. Step 4: Simplify right side
    15,450.40x = 186,379,143.60
  5. Step 5: Solve for x
    x = 186,379,143.60/15,450.40
  6. Step 6: Final answer
    x = 12,063.06

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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.