Home / 20,885,667.21-31,328,457.53-11,783,632.82

Finding the Fourth Proportional to 20,885,667.21, 31,328,457.53 and 11,783,632.82

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Solution

The fourth proportional to 20,885,667.21, 31,328,457.53 and 11,783,632.82 is: 17,675,424.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885,667.21 : 31,328,457.53 = 11,783,632.82 : x
  2. Step 2: Convert to fraction form
    20,885,667.21/31,328,457.53 = 11,783,632.82/x
  3. Step 3: Cross multiply
    20,885,667.21x = 31,328,457.53 × 11,783,632.82
  4. Step 4: Simplify right side
    20,885,667.21x = 369,163,040,134,923.62
  5. Step 5: Solve for x
    x = 369,163,040,134,923.62/20,885,667.21
  6. Step 6: Final answer
    x = 17,675,424.80

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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.