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Finding the Fourth Proportional to 18,724,165.20, 28,024,039.80 and 13,592,005.20

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Solution

The fourth proportional to 18,724,165.20, 28,024,039.80 and 13,592,005.20 is: 20,342,850.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,724,165.20 : 28,024,039.80 = 13,592,005.20 : x
  2. Step 2: Convert to fraction form
    18,724,165.20/28,024,039.80 = 13,592,005.20/x
  3. Step 3: Cross multiply
    18,724,165.20x = 28,024,039.80 × 13,592,005.20
  4. Step 4: Simplify right side
    18,724,165.20x = 380,902,894,686,606.94
  5. Step 5: Solve for x
    x = 380,902,894,686,606.94/18,724,165.20
  6. Step 6: Final answer
    x = 20,342,850.57

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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.