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Finding the Fourth Proportional to 19,365.40, 29,069.70 and 18,096.40

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Solution

The fourth proportional to 19,365.40, 29,069.70 and 18,096.40 is: 27,164.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,365.40 : 29,069.70 = 18,096.40 : x
  2. Step 2: Convert to fraction form
    19,365.40/29,069.70 = 18,096.40/x
  3. Step 3: Cross multiply
    19,365.40x = 29,069.70 × 18,096.40
  4. Step 4: Simplify right side
    19,365.40x = 526,056,919.08
  5. Step 5: Solve for x
    x = 526,056,919.08/19,365.40
  6. Step 6: Final answer
    x = 27,164.78

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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.