Home / 21,818,106-30,109,441.95-12,028,962.78

Finding the Fourth Proportional to 21,818,106, 30,109,441.95 and 12,028,962.78

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Solution

The fourth proportional to 21,818,106, 30,109,441.95 and 12,028,962.78 is: 16,600,219.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,818,106 : 30,109,441.95 = 12,028,962.78 : x
  2. Step 2: Convert to fraction form
    21,818,106/30,109,441.95 = 12,028,962.78/x
  3. Step 3: Cross multiply
    21,818,106x = 30,109,441.95 × 12,028,962.78
  4. Step 4: Simplify right side
    21,818,106x = 362,185,356,543,120.56
  5. Step 5: Solve for x
    x = 362,185,356,543,120.56/21,818,106
  6. Step 6: Final answer
    x = 16,600,219.86

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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.