Home / 21,057,580.80-31,586,371.20-20,738,716.20

Finding the Fourth Proportional to 21,057,580.80, 31,586,371.20 and 20,738,716.20

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Solution

The fourth proportional to 21,057,580.80, 31,586,371.20 and 20,738,716.20 is: 31,108,074.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,057,580.80 : 31,586,371.20 = 20,738,716.20 : x
  2. Step 2: Convert to fraction form
    21,057,580.80/31,586,371.20 = 20,738,716.20/x
  3. Step 3: Cross multiply
    21,057,580.80x = 31,586,371.20 × 20,738,716.20
  4. Step 4: Simplify right side
    21,057,580.80x = 655,060,788,104,653.38
  5. Step 5: Solve for x
    x = 655,060,788,104,653.38/21,057,580.80
  6. Step 6: Final answer
    x = 31,108,074.30

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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.