Home / 15,216,113.54-20,985,992.86-13,376,638.78

Finding the Fourth Proportional to 15,216,113.54, 20,985,992.86 and 13,376,638.78

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Solution

The fourth proportional to 15,216,113.54, 20,985,992.86 and 13,376,638.78 is: 18,448,997.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,216,113.54 : 20,985,992.86 = 13,376,638.78 : x
  2. Step 2: Convert to fraction form
    15,216,113.54/20,985,992.86 = 13,376,638.78/x
  3. Step 3: Cross multiply
    15,216,113.54x = 20,985,992.86 × 13,376,638.78
  4. Step 4: Simplify right side
    15,216,113.54x = 280,722,045,927,879.09
  5. Step 5: Solve for x
    x = 280,722,045,927,879.09/15,216,113.54
  6. Step 6: Final answer
    x = 18,448,997.85

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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.