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Finding the Fourth Proportional to 15,843.84, 21,848.64 and 10,538.88

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Solution

The fourth proportional to 15,843.84, 21,848.64 and 10,538.88 is: 14,533.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,843.84 : 21,848.64 = 10,538.88 : x
  2. Step 2: Convert to fraction form
    15,843.84/21,848.64 = 10,538.88/x
  3. Step 3: Cross multiply
    15,843.84x = 21,848.64 × 10,538.88
  4. Step 4: Simplify right side
    15,843.84x = 230,260,195.12
  5. Step 5: Solve for x
    x = 230,260,195.12/15,843.84
  6. Step 6: Final answer
    x = 14,533.11

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1.5x scale

Why These Related Problems?

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