Home / 20,680.26-31,020.39-7,529.64

Finding the Fourth Proportional to 20,680.26, 31,020.39 and 7,529.64

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Solution

The fourth proportional to 20,680.26, 31,020.39 and 7,529.64 is: 11,294.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680.26 : 31,020.39 = 7,529.64 : x
  2. Step 2: Convert to fraction form
    20,680.26/31,020.39 = 7,529.64/x
  3. Step 3: Cross multiply
    20,680.26x = 31,020.39 × 7,529.64
  4. Step 4: Simplify right side
    20,680.26x = 233,572,369.36
  5. Step 5: Solve for x
    x = 233,572,369.36/20,680.26
  6. Step 6: Final answer
    x = 11,294.46

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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.