Home / 20,314.06-30,480.18-12,916.60

Finding the Fourth Proportional to 20,314.06, 30,480.18 and 12,916.60

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Solution

The fourth proportional to 20,314.06, 30,480.18 and 12,916.60 is: 19,380.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,314.06 : 30,480.18 = 12,916.60 : x
  2. Step 2: Convert to fraction form
    20,314.06/30,480.18 = 12,916.60/x
  3. Step 3: Cross multiply
    20,314.06x = 30,480.18 × 12,916.60
  4. Step 4: Simplify right side
    20,314.06x = 393,700,292.99
  5. Step 5: Solve for x
    x = 393,700,292.99/20,314.06
  6. Step 6: Final answer
    x = 19,380.68

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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.