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Finding the Fourth Proportional to 28,703.31, 43,058.13 and 7,644.12

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Solution

The fourth proportional to 28,703.31, 43,058.13 and 7,644.12 is: 11,467.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,703.31 : 43,058.13 = 7,644.12 : x
  2. Step 2: Convert to fraction form
    28,703.31/43,058.13 = 7,644.12/x
  3. Step 3: Cross multiply
    28,703.31x = 43,058.13 × 7,644.12
  4. Step 4: Simplify right side
    28,703.31x = 329,141,607.76
  5. Step 5: Solve for x
    x = 329,141,607.76/28,703.31
  6. Step 6: Final answer
    x = 11,467.03

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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.