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Finding the Fourth Proportional to 21,775.61, 30,052.09 and 12,703.76

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Solution

The fourth proportional to 21,775.61, 30,052.09 and 12,703.76 is: 17,532.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,775.61 : 30,052.09 = 12,703.76 : x
  2. Step 2: Convert to fraction form
    21,775.61/30,052.09 = 12,703.76/x
  3. Step 3: Cross multiply
    21,775.61x = 30,052.09 × 12,703.76
  4. Step 4: Simplify right side
    21,775.61x = 381,774,565.97
  5. Step 5: Solve for x
    x = 381,774,565.97/21,775.61
  6. Step 6: Final answer
    x = 17,532.21

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.