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Finding the Fourth Proportional to 18,496,692.40, 27,745,038.60 and 17,740,865.20

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Solution

The fourth proportional to 18,496,692.40, 27,745,038.60 and 17,740,865.20 is: 26,611,297.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,496,692.40 : 27,745,038.60 = 17,740,865.20 : x
  2. Step 2: Convert to fraction form
    18,496,692.40/27,745,038.60 = 17,740,865.20/x
  3. Step 3: Cross multiply
    18,496,692.40x = 27,745,038.60 × 17,740,865.20
  4. Step 4: Simplify right side
    18,496,692.40x = 492,220,989,771,396.75
  5. Step 5: Solve for x
    x = 492,220,989,771,396.75/18,496,692.40
  6. Step 6: Final answer
    x = 26,611,297.80

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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.