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Finding the Fourth Proportional to 15,853.84, 21,868.72 and 10,186.68

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Solution

The fourth proportional to 15,853.84, 21,868.72 and 10,186.68 is: 14,051.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,853.84 : 21,868.72 = 10,186.68 : x
  2. Step 2: Convert to fraction form
    15,853.84/21,868.72 = 10,186.68/x
  3. Step 3: Cross multiply
    15,853.84x = 21,868.72 × 10,186.68
  4. Step 4: Simplify right side
    15,853.84x = 222,769,652.65
  5. Step 5: Solve for x
    x = 222,769,652.65/15,853.84
  6. Step 6: Final answer
    x = 14,051.46

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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.