Home / 12,805.21-19,216.50-4,485.30

Finding the Fourth Proportional to 12,805.21, 19,216.50 and 4,485.30

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Solution

The fourth proportional to 12,805.21, 19,216.50 and 4,485.30 is: 6,730.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,805.21 : 19,216.50 = 4,485.30 : x
  2. Step 2: Convert to fraction form
    12,805.21/19,216.50 = 4,485.30/x
  3. Step 3: Cross multiply
    12,805.21x = 19,216.50 × 4,485.30
  4. Step 4: Simplify right side
    12,805.21x = 86,191,767.45
  5. Step 5: Solve for x
    x = 86,191,767.45/12,805.21
  6. Step 6: Final answer
    x = 6,730.99

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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.