Home / 20,104.40-30,156.60-12,328.40

Finding the Fourth Proportional to 20,104.40, 30,156.60 and 12,328.40

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Solution

The fourth proportional to 20,104.40, 30,156.60 and 12,328.40 is: 18,492.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,104.40 : 30,156.60 = 12,328.40 : x
  2. Step 2: Convert to fraction form
    20,104.40/30,156.60 = 12,328.40/x
  3. Step 3: Cross multiply
    20,104.40x = 30,156.60 × 12,328.40
  4. Step 4: Simplify right side
    20,104.40x = 371,782,627.44
  5. Step 5: Solve for x
    x = 371,782,627.44/20,104.40
  6. Step 6: Final answer
    x = 18,492.60

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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.