Home / 20,877,877.30-28,812,131.33-12,057,169.01

Finding the Fourth Proportional to 20,877,877.30, 28,812,131.33 and 12,057,169.01

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Solution

The fourth proportional to 20,877,877.30, 28,812,131.33 and 12,057,169.01 is: 16,639,274.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,877,877.30 : 28,812,131.33 = 12,057,169.01 : x
  2. Step 2: Convert to fraction form
    20,877,877.30/28,812,131.33 = 12,057,169.01/x
  3. Step 3: Cross multiply
    20,877,877.30x = 28,812,131.33 × 12,057,169.01
  4. Step 4: Simplify right side
    20,877,877.30x = 347,392,737,022,896.31
  5. Step 5: Solve for x
    x = 347,392,737,022,896.31/20,877,877.30
  6. Step 6: Final answer
    x = 16,639,274.77

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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.