Home / 20,211.08-30,298.38-8,525

Finding the Fourth Proportional to 20,211.08, 30,298.38 and 8,525

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Solution

The fourth proportional to 20,211.08, 30,298.38 and 8,525 is: 12,779.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.08 : 30,298.38 = 8,525 : x
  2. Step 2: Convert to fraction form
    20,211.08/30,298.38 = 8,525/x
  3. Step 3: Cross multiply
    20,211.08x = 30,298.38 × 8,525
  4. Step 4: Simplify right side
    20,211.08x = 258,293,689.50
  5. Step 5: Solve for x
    x = 258,293,689.50/20,211.08
  6. Step 6: Final answer
    x = 12,779.81

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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.