Home / 12,478,364.20-18,724,544.70-5,288,674.60

Finding the Fourth Proportional to 12,478,364.20, 18,724,544.70 and 5,288,674.60

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Solution

The fourth proportional to 12,478,364.20, 18,724,544.70 and 5,288,674.60 is: 7,935,978.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,364.20 : 18,724,544.70 = 5,288,674.60 : x
  2. Step 2: Convert to fraction form
    12,478,364.20/18,724,544.70 = 5,288,674.60/x
  3. Step 3: Cross multiply
    12,478,364.20x = 18,724,544.70 × 5,288,674.60
  4. Step 4: Simplify right side
    12,478,364.20x = 99,028,023,951,454.61
  5. Step 5: Solve for x
    x = 99,028,023,951,454.61/12,478,364.20
  6. Step 6: Final answer
    x = 7,935,978.01

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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.