Home / 12,209.85-18,319.23-4,810.23

Finding the Fourth Proportional to 12,209.85, 18,319.23 and 4,810.23

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Solution

The fourth proportional to 12,209.85, 18,319.23 and 4,810.23 is: 7,217.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,209.85 : 18,319.23 = 4,810.23 : x
  2. Step 2: Convert to fraction form
    12,209.85/18,319.23 = 4,810.23/x
  3. Step 3: Cross multiply
    12,209.85x = 18,319.23 × 4,810.23
  4. Step 4: Simplify right side
    12,209.85x = 88,119,709.72
  5. Step 5: Solve for x
    x = 88,119,709.72/12,209.85
  6. Step 6: Final answer
    x = 7,217.10

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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.