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Finding the Fourth Proportional to 18,693,604.80, 28,048,280.40 and 10,180,051.20

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Solution

The fourth proportional to 18,693,604.80, 28,048,280.40 and 10,180,051.20 is: 15,274,364.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,693,604.80 : 28,048,280.40 = 10,180,051.20 : x
  2. Step 2: Convert to fraction form
    18,693,604.80/28,048,280.40 = 10,180,051.20/x
  3. Step 3: Cross multiply
    18,693,604.80x = 28,048,280.40 × 10,180,051.20
  4. Step 4: Simplify right side
    18,693,604.80x = 285,532,930,543,956.44
  5. Step 5: Solve for x
    x = 285,532,930,543,956.44/18,693,604.80
  6. Step 6: Final answer
    x = 15,274,364.34

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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.