Home / 12,684.12-19,020.42-9,764.28

Finding the Fourth Proportional to 12,684.12, 19,020.42 and 9,764.28

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Solution

The fourth proportional to 12,684.12, 19,020.42 and 9,764.28 is: 14,641.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,684.12 : 19,020.42 = 9,764.28 : x
  2. Step 2: Convert to fraction form
    12,684.12/19,020.42 = 9,764.28/x
  3. Step 3: Cross multiply
    12,684.12x = 19,020.42 × 9,764.28
  4. Step 4: Simplify right side
    12,684.12x = 185,720,706.60
  5. Step 5: Solve for x
    x = 185,720,706.60/12,684.12
  6. Step 6: Final answer
    x = 14,641.99

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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.