Home / 20,285.12-30,426.66-7,137.60

Finding the Fourth Proportional to 20,285.12, 30,426.66 and 7,137.60

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Solution

The fourth proportional to 20,285.12, 30,426.66 and 7,137.60 is: 10,706.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,285.12 : 30,426.66 = 7,137.60 : x
  2. Step 2: Convert to fraction form
    20,285.12/30,426.66 = 7,137.60/x
  3. Step 3: Cross multiply
    20,285.12x = 30,426.66 × 7,137.60
  4. Step 4: Simplify right side
    20,285.12x = 217,173,328.42
  5. Step 5: Solve for x
    x = 217,173,328.42/20,285.12
  6. Step 6: Final answer
    x = 10,706.04

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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.