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Finding the Fourth Proportional to 39,234, 58,809.82 and 19,215.88

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Solution

The fourth proportional to 39,234, 58,809.82 and 19,215.88 is: 28,803.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,234 : 58,809.82 = 19,215.88 : x
  2. Step 2: Convert to fraction form
    39,234/58,809.82 = 19,215.88/x
  3. Step 3: Cross multiply
    39,234x = 58,809.82 × 19,215.88
  4. Step 4: Simplify right side
    39,234x = 1,130,082,443.94
  5. Step 5: Solve for x
    x = 1,130,082,443.94/39,234
  6. Step 6: Final answer
    x = 28,803.65

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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.