Home / 13,128,238.78-18,100,127.45-10,764,728.75

Finding the Fourth Proportional to 13,128,238.78, 18,100,127.45 and 10,764,728.75

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Solution

The fourth proportional to 13,128,238.78, 18,100,127.45 and 10,764,728.75 is: 14,841,515.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128,238.78 : 18,100,127.45 = 10,764,728.75 : x
  2. Step 2: Convert to fraction form
    13,128,238.78/18,100,127.45 = 10,764,728.75/x
  3. Step 3: Cross multiply
    13,128,238.78x = 18,100,127.45 × 10,764,728.75
  4. Step 4: Simplify right side
    13,128,238.78x = 194,842,962,310,028.09
  5. Step 5: Solve for x
    x = 194,842,962,310,028.09/13,128,238.78
  6. Step 6: Final answer
    x = 14,841,515.72

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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.