Home / 13,121.14-19,675.23-5,722.40

Finding the Fourth Proportional to 13,121.14, 19,675.23 and 5,722.40

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Solution

The fourth proportional to 13,121.14, 19,675.23 and 5,722.40 is: 8,580.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121.14 : 19,675.23 = 5,722.40 : x
  2. Step 2: Convert to fraction form
    13,121.14/19,675.23 = 5,722.40/x
  3. Step 3: Cross multiply
    13,121.14x = 19,675.23 × 5,722.40
  4. Step 4: Simplify right side
    13,121.14x = 112,589,536.15
  5. Step 5: Solve for x
    x = 112,589,536.15/13,121.14
  6. Step 6: Final answer
    x = 8,580.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.