Home / 21,305,135.73-31,962,439.67-9,939,384.21

Finding the Fourth Proportional to 21,305,135.73, 31,962,439.67 and 9,939,384.21

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Solution

The fourth proportional to 21,305,135.73, 31,962,439.67 and 9,939,384.21 is: 14,911,285.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,305,135.73 : 31,962,439.67 = 9,939,384.21 : x
  2. Step 2: Convert to fraction form
    21,305,135.73/31,962,439.67 = 9,939,384.21/x
  3. Step 3: Cross multiply
    21,305,135.73x = 31,962,439.67 × 9,939,384.21
  4. Step 4: Simplify right side
    21,305,135.73x = 317,686,968,119,378.69
  5. Step 5: Solve for x
    x = 317,686,968,119,378.69/21,305,135.73
  6. Step 6: Final answer
    x = 14,911,285.81

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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.