Home / 13,156,911.26-18,155,615.82-7,649,895.42

Finding the Fourth Proportional to 13,156,911.26, 18,155,615.82 and 7,649,895.42

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Solution

The fourth proportional to 13,156,911.26, 18,155,615.82 and 7,649,895.42 is: 10,556,319.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,156,911.26 : 18,155,615.82 = 7,649,895.42 : x
  2. Step 2: Convert to fraction form
    13,156,911.26/18,155,615.82 = 7,649,895.42/x
  3. Step 3: Cross multiply
    13,156,911.26x = 18,155,615.82 × 7,649,895.42
  4. Step 4: Simplify right side
    13,156,911.26x = 138,888,562,308,697.55
  5. Step 5: Solve for x
    x = 138,888,562,308,697.55/13,156,911.26
  6. Step 6: Final answer
    x = 10,556,319.76

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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.