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Finding the Fourth Proportional to 19,802.88, 29,670.72 and 13,932.48

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Solution

The fourth proportional to 19,802.88, 29,670.72 and 13,932.48 is: 20,875.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,802.88 : 29,670.72 = 13,932.48 : x
  2. Step 2: Convert to fraction form
    19,802.88/29,670.72 = 13,932.48/x
  3. Step 3: Cross multiply
    19,802.88x = 29,670.72 × 13,932.48
  4. Step 4: Simplify right side
    19,802.88x = 413,386,712.99
  5. Step 5: Solve for x
    x = 413,386,712.99/19,802.88
  6. Step 6: Final answer
    x = 20,875.08

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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.