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Finding the Fourth Proportional to 18,684,005.80, 28,047,003.90 and 14,442,975.40

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Solution

The fourth proportional to 18,684,005.80, 28,047,003.90 and 14,442,975.40 is: 21,680,692.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684,005.80 : 28,047,003.90 = 14,442,975.40 : x
  2. Step 2: Convert to fraction form
    18,684,005.80/28,047,003.90 = 14,442,975.40/x
  3. Step 3: Cross multiply
    18,684,005.80x = 28,047,003.90 × 14,442,975.40
  4. Step 4: Simplify right side
    18,684,005.80x = 405,082,187,371,404.06
  5. Step 5: Solve for x
    x = 405,082,187,371,404.06/18,684,005.80
  6. Step 6: Final answer
    x = 21,680,692.66

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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.