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Finding the Fourth Proportional to 19,710.64, 29,569.56 and 11,910.16

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Solution

The fourth proportional to 19,710.64, 29,569.56 and 11,910.16 is: 17,867.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,710.64 : 29,569.56 = 11,910.16 : x
  2. Step 2: Convert to fraction form
    19,710.64/29,569.56 = 11,910.16/x
  3. Step 3: Cross multiply
    19,710.64x = 29,569.56 × 11,910.16
  4. Step 4: Simplify right side
    19,710.64x = 352,178,190.73
  5. Step 5: Solve for x
    x = 352,178,190.73/19,710.64
  6. Step 6: Final answer
    x = 17,867.42

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1.5x scale

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.