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Finding the Fourth Proportional to 23,159.84, 31,961.04 and 18,130.72

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Solution

The fourth proportional to 23,159.84, 31,961.04 and 18,130.72 is: 25,020.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,159.84 : 31,961.04 = 18,130.72 : x
  2. Step 2: Convert to fraction form
    23,159.84/31,961.04 = 18,130.72/x
  3. Step 3: Cross multiply
    23,159.84x = 31,961.04 × 18,130.72
  4. Step 4: Simplify right side
    23,159.84x = 579,476,667.15
  5. Step 5: Solve for x
    x = 579,476,667.15/23,159.84
  6. Step 6: Final answer
    x = 25,020.75

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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.