Home / 21,210,504.70-31,815,553.74-12,568,384.27

Finding the Fourth Proportional to 21,210,504.70, 31,815,553.74 and 12,568,384.27

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Solution

The fourth proportional to 21,210,504.70, 31,815,553.74 and 12,568,384.27 is: 18,852,455.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210,504.70 : 31,815,553.74 = 12,568,384.27 : x
  2. Step 2: Convert to fraction form
    21,210,504.70/31,815,553.74 = 12,568,384.27/x
  3. Step 3: Cross multiply
    21,210,504.70x = 31,815,553.74 × 12,568,384.27
  4. Step 4: Simplify right side
    21,210,504.70x = 399,870,105,167,155.62
  5. Step 5: Solve for x
    x = 399,870,105,167,155.62/21,210,504.70
  6. Step 6: Final answer
    x = 18,852,455.93

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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.