Home / 21,621,511.78-29,837,688.18-11,831,955.46

Finding the Fourth Proportional to 21,621,511.78, 29,837,688.18 and 11,831,955.46

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Solution

The fourth proportional to 21,621,511.78, 29,837,688.18 and 11,831,955.46 is: 16,328,099.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,621,511.78 : 29,837,688.18 = 11,831,955.46 : x
  2. Step 2: Convert to fraction form
    21,621,511.78/29,837,688.18 = 11,831,955.46/x
  3. Step 3: Cross multiply
    21,621,511.78x = 29,837,688.18 × 11,831,955.46
  4. Step 4: Simplify right side
    21,621,511.78x = 353,038,197,575,128.50
  5. Step 5: Solve for x
    x = 353,038,197,575,128.50/21,621,511.78
  6. Step 6: Final answer
    x = 16,328,099.59

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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.