Home / 12,808.09-19,213.35-4,490.20

Finding the Fourth Proportional to 12,808.09, 19,213.35 and 4,490.20

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Solution

The fourth proportional to 12,808.09, 19,213.35 and 4,490.20 is: 6,735.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,808.09 : 19,213.35 = 4,490.20 : x
  2. Step 2: Convert to fraction form
    12,808.09/19,213.35 = 4,490.20/x
  3. Step 3: Cross multiply
    12,808.09x = 19,213.35 × 4,490.20
  4. Step 4: Simplify right side
    12,808.09x = 86,271,784.17
  5. Step 5: Solve for x
    x = 86,271,784.17/12,808.09
  6. Step 6: Final answer
    x = 6,735.73

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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.