Home / 20,526,319,273.78-28,326,320,839.65-11,138,945,449.78

Finding the Fourth Proportional to 20,526,319,273.78, 28,326,320,839.65 and 11,138,945,449.78

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Solution

The fourth proportional to 20,526,319,273.78, 28,326,320,839.65 and 11,138,945,449.78 is: 15,371,744,851.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,526,319,273.78 : 28,326,320,839.65 = 11,138,945,449.78 : x
  2. Step 2: Convert to fraction form
    20,526,319,273.78/28,326,320,839.65 = 11,138,945,449.78/x
  3. Step 3: Cross multiply
    20,526,319,273.78x = 28,326,320,839.65 × 11,138,945,449.78
  4. Step 4: Simplify right side
    20,526,319,273.78x = 315,525,342,625,827,782,656
  5. Step 5: Solve for x
    x = 315,525,342,625,827,782,656/20,526,319,273.78
  6. Step 6: Final answer
    x = 15,371,744,851.93

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1.5x scale

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.