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Finding the Fourth Proportional to 39,420, 59,155.92 and 14,796

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Solution

The fourth proportional to 39,420, 59,155.92 and 14,796 is: 22,203.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,420 : 59,155.92 = 14,796 : x
  2. Step 2: Convert to fraction form
    39,420/59,155.92 = 14,796/x
  3. Step 3: Cross multiply
    39,420x = 59,155.92 × 14,796
  4. Step 4: Simplify right side
    39,420x = 875,270,992.32
  5. Step 5: Solve for x
    x = 875,270,992.32/39,420
  6. Step 6: Final answer
    x = 22,203.73

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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.