Home / 20,684.04-30,986.88-12,225.25

Finding the Fourth Proportional to 20,684.04, 30,986.88 and 12,225.25

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Solution

The fourth proportional to 20,684.04, 30,986.88 and 12,225.25 is: 18,314.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684.04 : 30,986.88 = 12,225.25 : x
  2. Step 2: Convert to fraction form
    20,684.04/30,986.88 = 12,225.25/x
  3. Step 3: Cross multiply
    20,684.04x = 30,986.88 × 12,225.25
  4. Step 4: Simplify right side
    20,684.04x = 378,822,354.72
  5. Step 5: Solve for x
    x = 378,822,354.72/20,684.04
  6. Step 6: Final answer
    x = 18,314.72

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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.