Home / 28,762,629.73-42,986,343.17-20,997,895.41

Finding the Fourth Proportional to 28,762,629.73, 42,986,343.17 and 20,997,895.41

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Solution

The fourth proportional to 28,762,629.73, 42,986,343.17 and 20,997,895.41 is: 31,381,787.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,762,629.73 : 42,986,343.17 = 20,997,895.41 : x
  2. Step 2: Convert to fraction form
    28,762,629.73/42,986,343.17 = 20,997,895.41/x
  3. Step 3: Cross multiply
    28,762,629.73x = 42,986,343.17 × 20,997,895.41
  4. Step 4: Simplify right side
    28,762,629.73x = 902,622,737,996,999
  5. Step 5: Solve for x
    x = 902,622,737,996,999/28,762,629.73
  6. Step 6: Final answer
    x = 31,381,787.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.