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Finding the Fourth Proportional to 18,963.44, 26,157.72 and 13,649.84

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Solution

The fourth proportional to 18,963.44, 26,157.72 and 13,649.84 is: 18,828.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,963.44 : 26,157.72 = 13,649.84 : x
  2. Step 2: Convert to fraction form
    18,963.44/26,157.72 = 13,649.84/x
  3. Step 3: Cross multiply
    18,963.44x = 26,157.72 × 13,649.84
  4. Step 4: Simplify right side
    18,963.44x = 357,048,692.76
  5. Step 5: Solve for x
    x = 357,048,692.76/18,963.44
  6. Step 6: Final answer
    x = 18,828.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.