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Finding the Fourth Proportional to 38,904, 58,356 and 9,720

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Solution

The fourth proportional to 38,904, 58,356 and 9,720 is: 14,580

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,904 : 58,356 = 9,720 : x
  2. Step 2: Convert to fraction form
    38,904/58,356 = 9,720/x
  3. Step 3: Cross multiply
    38,904x = 58,356 × 9,720
  4. Step 4: Simplify right side
    38,904x = 567,220,320
  5. Step 5: Solve for x
    x = 567,220,320/38,904
  6. Step 6: Final answer
    x = 14,580

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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.