Home / 12,509,330.27-18,765,395.09-3,987,689.63

Finding the Fourth Proportional to 12,509,330.27, 18,765,395.09 and 3,987,689.63

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Solution

The fourth proportional to 12,509,330.27, 18,765,395.09 and 3,987,689.63 is: 5,981,980.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,509,330.27 : 18,765,395.09 = 3,987,689.63 : x
  2. Step 2: Convert to fraction form
    12,509,330.27/18,765,395.09 = 3,987,689.63/x
  3. Step 3: Cross multiply
    12,509,330.27x = 18,765,395.09 × 3,987,689.63
  4. Step 4: Simplify right side
    12,509,330.27x = 74,830,571,460,128.62
  5. Step 5: Solve for x
    x = 74,830,571,460,128.62/12,509,330.27
  6. Step 6: Final answer
    x = 5,981,980.64

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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.