Home / 13,318,439.28-18,245,956.47-12,820,499.61

Finding the Fourth Proportional to 13,318,439.28, 18,245,956.47 and 12,820,499.61

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Solution

The fourth proportional to 13,318,439.28, 18,245,956.47 and 12,820,499.61 is: 17,563,790.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318,439.28 : 18,245,956.47 = 12,820,499.61 : x
  2. Step 2: Convert to fraction form
    13,318,439.28/18,245,956.47 = 12,820,499.61/x
  3. Step 3: Cross multiply
    13,318,439.28x = 18,245,956.47 × 12,820,499.61
  4. Step 4: Simplify right side
    13,318,439.28x = 233,922,277,807,711.94
  5. Step 5: Solve for x
    x = 233,922,277,807,711.94/13,318,439.28
  6. Step 6: Final answer
    x = 17,563,790.54

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.