Home / 21,038,043.68-29,030,288.57-12,215,770.43

Finding the Fourth Proportional to 21,038,043.68, 29,030,288.57 and 12,215,770.43

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Solution

The fourth proportional to 21,038,043.68, 29,030,288.57 and 12,215,770.43 is: 16,856,478.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,038,043.68 : 29,030,288.57 = 12,215,770.43 : x
  2. Step 2: Convert to fraction form
    21,038,043.68/29,030,288.57 = 12,215,770.43/x
  3. Step 3: Cross multiply
    21,038,043.68x = 29,030,288.57 × 12,215,770.43
  4. Step 4: Simplify right side
    21,038,043.68x = 354,627,340,759,360.88
  5. Step 5: Solve for x
    x = 354,627,340,759,360.88/21,038,043.68
  6. Step 6: Final answer
    x = 16,856,478.96

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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.