Home / 21,860,415.92-30,156,477.78-13,033,642

Finding the Fourth Proportional to 21,860,415.92, 30,156,477.78 and 13,033,642

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Solution

The fourth proportional to 21,860,415.92, 30,156,477.78 and 13,033,642 is: 17,979,929.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,860,415.92 : 30,156,477.78 = 13,033,642 : x
  2. Step 2: Convert to fraction form
    21,860,415.92/30,156,477.78 = 13,033,642/x
  3. Step 3: Cross multiply
    21,860,415.92x = 30,156,477.78 × 13,033,642
  4. Step 4: Simplify right side
    21,860,415.92x = 393,048,735,365,474.75
  5. Step 5: Solve for x
    x = 393,048,735,365,474.75/21,860,415.92
  6. Step 6: Final answer
    x = 17,979,929.42

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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.