Home / 20,824,130.72-28,736,940.12-11,531,516.60

Finding the Fourth Proportional to 20,824,130.72, 28,736,940.12 and 11,531,516.60

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Solution

The fourth proportional to 20,824,130.72, 28,736,940.12 and 11,531,516.60 is: 15,913,293.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824,130.72 : 28,736,940.12 = 11,531,516.60 : x
  2. Step 2: Convert to fraction form
    20,824,130.72/28,736,940.12 = 11,531,516.60/x
  3. Step 3: Cross multiply
    20,824,130.72x = 28,736,940.12 × 11,531,516.60
  4. Step 4: Simplify right side
    20,824,130.72x = 331,380,502,026,986
  5. Step 5: Solve for x
    x = 331,380,502,026,986/20,824,130.72
  6. Step 6: Final answer
    x = 15,913,293.40

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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.