Home / 13,540,481.47-20,315,778.59-5,455,750.78

Finding the Fourth Proportional to 13,540,481.47, 20,315,778.59 and 5,455,750.78

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Solution

The fourth proportional to 13,540,481.47, 20,315,778.59 and 5,455,750.78 is: 8,185,663.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,540,481.47 : 20,315,778.59 = 5,455,750.78 : x
  2. Step 2: Convert to fraction form
    13,540,481.47/20,315,778.59 = 5,455,750.78/x
  3. Step 3: Cross multiply
    13,540,481.47x = 20,315,778.59 × 5,455,750.78
  4. Step 4: Simplify right side
    13,540,481.47x = 110,837,824,888,699.80
  5. Step 5: Solve for x
    x = 110,837,824,888,699.80/13,540,481.47
  6. Step 6: Final answer
    x = 8,185,663.50

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1.5x scale

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.