Home / 20,245.05-30,368.02-8,400.62

Finding the Fourth Proportional to 20,245.05, 30,368.02 and 8,400.62

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Solution

The fourth proportional to 20,245.05, 30,368.02 and 8,400.62 is: 12,601.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,245.05 : 30,368.02 = 8,400.62 : x
  2. Step 2: Convert to fraction form
    20,245.05/30,368.02 = 8,400.62/x
  3. Step 3: Cross multiply
    20,245.05x = 30,368.02 × 8,400.62
  4. Step 4: Simplify right side
    20,245.05x = 255,110,044.33
  5. Step 5: Solve for x
    x = 255,110,044.33/20,245.05
  6. Step 6: Final answer
    x = 12,601.11

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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.