Home / 20,208.10-30,316.23-8,521.30

Finding the Fourth Proportional to 20,208.10, 30,316.23 and 8,521.30

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Solution

The fourth proportional to 20,208.10, 30,316.23 and 8,521.30 is: 12,783.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208.10 : 30,316.23 = 8,521.30 : x
  2. Step 2: Convert to fraction form
    20,208.10/30,316.23 = 8,521.30/x
  3. Step 3: Cross multiply
    20,208.10x = 30,316.23 × 8,521.30
  4. Step 4: Simplify right side
    20,208.10x = 258,333,690.70
  5. Step 5: Solve for x
    x = 258,333,690.70/20,208.10
  6. Step 6: Final answer
    x = 12,783.67

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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.