Home / 30,623.20-45,946.26-20,854.60

Finding the Fourth Proportional to 30,623.20, 45,946.26 and 20,854.60

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Solution

The fourth proportional to 30,623.20, 45,946.26 and 20,854.60 is: 31,289.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,623.20 : 45,946.26 = 20,854.60 : x
  2. Step 2: Convert to fraction form
    30,623.20/45,946.26 = 20,854.60/x
  3. Step 3: Cross multiply
    30,623.20x = 45,946.26 × 20,854.60
  4. Step 4: Simplify right side
    30,623.20x = 958,190,873.80
  5. Step 5: Solve for x
    x = 958,190,873.80/30,623.20
  6. Step 6: Final answer
    x = 31,289.70

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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.