Home / 21,130,382.57-31,624,949.93-12,030,037.22

Finding the Fourth Proportional to 21,130,382.57, 31,624,949.93 and 12,030,037.22

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Solution

The fourth proportional to 21,130,382.57, 31,624,949.93 and 12,030,037.22 is: 18,004,847.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,130,382.57 : 31,624,949.93 = 12,030,037.22 : x
  2. Step 2: Convert to fraction form
    21,130,382.57/31,624,949.93 = 12,030,037.22/x
  3. Step 3: Cross multiply
    21,130,382.57x = 31,624,949.93 × 12,030,037.22
  4. Step 4: Simplify right side
    21,130,382.57x = 380,449,324,520,261.44
  5. Step 5: Solve for x
    x = 380,449,324,520,261.44/21,130,382.57
  6. Step 6: Final answer
    x = 18,004,847.92

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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.