Home / 42,912.89-64,369.38-17,939.27

Finding the Fourth Proportional to 42,912.89, 64,369.38 and 17,939.27

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Solution

The fourth proportional to 42,912.89, 64,369.38 and 17,939.27 is: 26,908.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,912.89 : 64,369.38 = 17,939.27 : x
  2. Step 2: Convert to fraction form
    42,912.89/64,369.38 = 17,939.27/x
  3. Step 3: Cross multiply
    42,912.89x = 64,369.38 × 17,939.27
  4. Step 4: Simplify right side
    42,912.89x = 1,154,739,915.75
  5. Step 5: Solve for x
    x = 1,154,739,915.75/42,912.89
  6. Step 6: Final answer
    x = 26,908.93

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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.