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Finding the Fourth Proportional to 28,185, 42,284.52 and 10,654.92

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Solution

The fourth proportional to 28,185, 42,284.52 and 10,654.92 is: 15,985.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,185 : 42,284.52 = 10,654.92 : x
  2. Step 2: Convert to fraction form
    28,185/42,284.52 = 10,654.92/x
  3. Step 3: Cross multiply
    28,185x = 42,284.52 × 10,654.92
  4. Step 4: Simplify right side
    28,185x = 450,538,177.84
  5. Step 5: Solve for x
    x = 450,538,177.84/28,185
  6. Step 6: Final answer
    x = 15,985.03

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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.