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Finding the Fourth Proportional to 19,893.60, 29,840.40 and 6,040.80

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Solution

The fourth proportional to 19,893.60, 29,840.40 and 6,040.80 is: 9,061.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,893.60 : 29,840.40 = 6,040.80 : x
  2. Step 2: Convert to fraction form
    19,893.60/29,840.40 = 6,040.80/x
  3. Step 3: Cross multiply
    19,893.60x = 29,840.40 × 6,040.80
  4. Step 4: Simplify right side
    19,893.60x = 180,259,888.32
  5. Step 5: Solve for x
    x = 180,259,888.32/19,893.60
  6. Step 6: Final answer
    x = 9,061.20

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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.