Home / 21,166,822.89-31,739,963.54-12,415,492.17

Finding the Fourth Proportional to 21,166,822.89, 31,739,963.54 and 12,415,492.17

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Solution

The fourth proportional to 21,166,822.89, 31,739,963.54 and 12,415,492.17 is: 18,617,213.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,166,822.89 : 31,739,963.54 = 12,415,492.17 : x
  2. Step 2: Convert to fraction form
    21,166,822.89/31,739,963.54 = 12,415,492.17/x
  3. Step 3: Cross multiply
    21,166,822.89x = 31,739,963.54 × 12,415,492.17
  4. Step 4: Simplify right side
    21,166,822.89x = 394,067,268,744,878
  5. Step 5: Solve for x
    x = 394,067,268,744,878/21,166,822.89
  6. Step 6: Final answer
    x = 18,617,213.87

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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.