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Finding the Fourth Proportional to 18,190,314.20, 27,285,471.30 and 10,915,477.40

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Solution

The fourth proportional to 18,190,314.20, 27,285,471.30 and 10,915,477.40 is: 16,373,216.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,190,314.20 : 27,285,471.30 = 10,915,477.40 : x
  2. Step 2: Convert to fraction form
    18,190,314.20/27,285,471.30 = 10,915,477.40/x
  3. Step 3: Cross multiply
    18,190,314.20x = 27,285,471.30 × 10,915,477.40
  4. Step 4: Simplify right side
    18,190,314.20x = 297,833,945,323,498.62
  5. Step 5: Solve for x
    x = 297,833,945,323,498.62/18,190,314.20
  6. Step 6: Final answer
    x = 16,373,216.10

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1.5x scale

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.