Home / 20,511.20-30,768.30-8,030.10

Finding the Fourth Proportional to 20,511.20, 30,768.30 and 8,030.10

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Solution

The fourth proportional to 20,511.20, 30,768.30 and 8,030.10 is: 12,045.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511.20 : 30,768.30 = 8,030.10 : x
  2. Step 2: Convert to fraction form
    20,511.20/30,768.30 = 8,030.10/x
  3. Step 3: Cross multiply
    20,511.20x = 30,768.30 × 8,030.10
  4. Step 4: Simplify right side
    20,511.20x = 247,072,525.83
  5. Step 5: Solve for x
    x = 247,072,525.83/20,511.20
  6. Step 6: Final answer
    x = 12,045.74

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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.