Home / 13,121,239.02-18,107,317.56-7,320,020.78

Finding the Fourth Proportional to 13,121,239.02, 18,107,317.56 and 7,320,020.78

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Solution

The fourth proportional to 13,121,239.02, 18,107,317.56 and 7,320,020.78 is: 10,101,632.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121,239.02 : 18,107,317.56 = 7,320,020.78 : x
  2. Step 2: Convert to fraction form
    13,121,239.02/18,107,317.56 = 7,320,020.78/x
  3. Step 3: Cross multiply
    13,121,239.02x = 18,107,317.56 × 7,320,020.78
  4. Step 4: Simplify right side
    13,121,239.02x = 132,545,940,809,258.89
  5. Step 5: Solve for x
    x = 132,545,940,809,258.89/13,121,239.02
  6. Step 6: Final answer
    x = 10,101,632.98

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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.