Home / 28,083,438,913.78-42,139,641,248.63-13,162,120,383.30

Finding the Fourth Proportional to 28,083,438,913.78, 42,139,641,248.63 and 13,162,120,383.30

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Solution

The fourth proportional to 28,083,438,913.78, 42,139,641,248.63 and 13,162,120,383.30 is: 19,749,968,396.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,083,438,913.78 : 42,139,641,248.63 = 13,162,120,383.30 : x
  2. Step 2: Convert to fraction form
    28,083,438,913.78/42,139,641,248.63 = 13,162,120,383.30/x
  3. Step 3: Cross multiply
    28,083,438,913.78x = 42,139,641,248.63 × 13,162,120,383.30
  4. Step 4: Simplify right side
    28,083,438,913.78x = 554,647,031,023,542,337,536
  5. Step 5: Solve for x
    x = 554,647,031,023,542,337,536/28,083,438,913.78
  6. Step 6: Final answer
    x = 19,749,968,396.90

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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.