Home / 13,315,651.37-18,388,289.77-12,590,223.98

Finding the Fourth Proportional to 13,315,651.37, 18,388,289.77 and 12,590,223.98

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Solution

The fourth proportional to 13,315,651.37, 18,388,289.77 and 12,590,223.98 is: 17,386,508.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315,651.37 : 18,388,289.77 = 12,590,223.98 : x
  2. Step 2: Convert to fraction form
    13,315,651.37/18,388,289.77 = 12,590,223.98/x
  3. Step 3: Cross multiply
    13,315,651.37x = 18,388,289.77 × 12,590,223.98
  4. Step 4: Simplify right side
    13,315,651.37x = 231,512,686,813,442.69
  5. Step 5: Solve for x
    x = 231,512,686,813,442.69/13,315,651.37
  6. Step 6: Final answer
    x = 17,386,508.58

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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.