Home / 19,997.84-30,005.40-11,219.60

Finding the Fourth Proportional to 19,997.84, 30,005.40 and 11,219.60

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Solution

The fourth proportional to 19,997.84, 30,005.40 and 11,219.60 is: 16,834.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,997.84 : 30,005.40 = 11,219.60 : x
  2. Step 2: Convert to fraction form
    19,997.84/30,005.40 = 11,219.60/x
  3. Step 3: Cross multiply
    19,997.84x = 30,005.40 × 11,219.60
  4. Step 4: Simplify right side
    19,997.84x = 336,648,585.84
  5. Step 5: Solve for x
    x = 336,648,585.84/19,997.84
  6. Step 6: Final answer
    x = 16,834.25

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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.