Home / 30,861.20-46,291.80-20,363.60

Finding the Fourth Proportional to 30,861.20, 46,291.80 and 20,363.60

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Solution

The fourth proportional to 30,861.20, 46,291.80 and 20,363.60 is: 30,545.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,861.20 : 46,291.80 = 20,363.60 : x
  2. Step 2: Convert to fraction form
    30,861.20/46,291.80 = 20,363.60/x
  3. Step 3: Cross multiply
    30,861.20x = 46,291.80 × 20,363.60
  4. Step 4: Simplify right side
    30,861.20x = 942,667,698.48
  5. Step 5: Solve for x
    x = 942,667,698.48/30,861.20
  6. Step 6: Final answer
    x = 30,545.40

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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.