Home / 42,943.70-64,428.96-19,271.09

Finding the Fourth Proportional to 42,943.70, 64,428.96 and 19,271.09

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Solution

The fourth proportional to 42,943.70, 64,428.96 and 19,271.09 is: 28,912.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,943.70 : 64,428.96 = 19,271.09 : x
  2. Step 2: Convert to fraction form
    42,943.70/64,428.96 = 19,271.09/x
  3. Step 3: Cross multiply
    42,943.70x = 64,428.96 × 19,271.09
  4. Step 4: Simplify right side
    42,943.70x = 1,241,616,286.77
  5. Step 5: Solve for x
    x = 1,241,616,286.77/42,943.70
  6. Step 6: Final answer
    x = 28,912.65

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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.