Home / 21,212,609.95-31,805,892.91-8,243,617.70

Finding the Fourth Proportional to 21,212,609.95, 31,805,892.91 and 8,243,617.70

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Solution

The fourth proportional to 21,212,609.95, 31,805,892.91 and 8,243,617.70 is: 12,360,365.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212,609.95 : 31,805,892.91 = 8,243,617.70 : x
  2. Step 2: Convert to fraction form
    21,212,609.95/31,805,892.91 = 8,243,617.70/x
  3. Step 3: Cross multiply
    21,212,609.95x = 31,805,892.91 × 8,243,617.70
  4. Step 4: Simplify right side
    21,212,609.95x = 262,195,621,846,999.75
  5. Step 5: Solve for x
    x = 262,195,621,846,999.75/21,212,609.95
  6. Step 6: Final answer
    x = 12,360,365.95

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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.