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Finding the Fourth Proportional to 18,457,239.16, 27,691,773.22 and 12,923,539.03

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Solution

The fourth proportional to 18,457,239.16, 27,691,773.22 and 12,923,539.03 is: 19,389,449.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,457,239.16 : 27,691,773.22 = 12,923,539.03 : x
  2. Step 2: Convert to fraction form
    18,457,239.16/27,691,773.22 = 12,923,539.03/x
  3. Step 3: Cross multiply
    18,457,239.16x = 27,691,773.22 × 12,923,539.03
  4. Step 4: Simplify right side
    18,457,239.16x = 357,875,712,111,504.50
  5. Step 5: Solve for x
    x = 357,875,712,111,504.50/18,457,239.16
  6. Step 6: Final answer
    x = 19,389,449.80

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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.