Home / 20,382.68-30,583.04-12,985.24

Finding the Fourth Proportional to 20,382.68, 30,583.04 and 12,985.24

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Solution

The fourth proportional to 20,382.68, 30,583.04 and 12,985.24 is: 19,483.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,382.68 : 30,583.04 = 12,985.24 : x
  2. Step 2: Convert to fraction form
    20,382.68/30,583.04 = 12,985.24/x
  3. Step 3: Cross multiply
    20,382.68x = 30,583.04 × 12,985.24
  4. Step 4: Simplify right side
    20,382.68x = 397,128,114.33
  5. Step 5: Solve for x
    x = 397,128,114.33/20,382.68
  6. Step 6: Final answer
    x = 19,483.61

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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.