Home / 42,801.81-64,178.03-13,211.73

Finding the Fourth Proportional to 42,801.81, 64,178.03 and 13,211.73

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Solution

The fourth proportional to 42,801.81, 64,178.03 and 13,211.73 is: 19,809.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,801.81 : 64,178.03 = 13,211.73 : x
  2. Step 2: Convert to fraction form
    42,801.81/64,178.03 = 13,211.73/x
  3. Step 3: Cross multiply
    42,801.81x = 64,178.03 × 13,211.73
  4. Step 4: Simplify right side
    42,801.81x = 847,902,738.23
  5. Step 5: Solve for x
    x = 847,902,738.23/42,801.81
  6. Step 6: Final answer
    x = 19,809.97

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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.