Home / 21,320,312.72-29,422,031.58-11,530,756.94

Finding the Fourth Proportional to 21,320,312.72, 29,422,031.58 and 11,530,756.94

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Solution

The fourth proportional to 21,320,312.72, 29,422,031.58 and 11,530,756.94 is: 15,912,444.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,320,312.72 : 29,422,031.58 = 11,530,756.94 : x
  2. Step 2: Convert to fraction form
    21,320,312.72/29,422,031.58 = 11,530,756.94/x
  3. Step 3: Cross multiply
    21,320,312.72x = 29,422,031.58 × 11,530,756.94
  4. Step 4: Simplify right side
    21,320,312.72x = 339,258,294,682,874
  5. Step 5: Solve for x
    x = 339,258,294,682,874/21,320,312.72
  6. Step 6: Final answer
    x = 15,912,444.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.