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Finding the Fourth Proportional to 28,671, 43,008.12 and 10,203

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Solution

The fourth proportional to 28,671, 43,008.12 and 10,203 is: 15,305.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,671 : 43,008.12 = 10,203 : x
  2. Step 2: Convert to fraction form
    28,671/43,008.12 = 10,203/x
  3. Step 3: Cross multiply
    28,671x = 43,008.12 × 10,203
  4. Step 4: Simplify right side
    28,671x = 438,811,848.36
  5. Step 5: Solve for x
    x = 438,811,848.36/28,671
  6. Step 6: Final answer
    x = 15,305.08

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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.