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Finding the Fourth Proportional to 12,907.31, 17,810.99 and 7,241.29

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Solution

The fourth proportional to 12,907.31, 17,810.99 and 7,241.29 is: 9,992.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,907.31 : 17,810.99 = 7,241.29 : x
  2. Step 2: Convert to fraction form
    12,907.31/17,810.99 = 7,241.29/x
  3. Step 3: Cross multiply
    12,907.31x = 17,810.99 × 7,241.29
  4. Step 4: Simplify right side
    12,907.31x = 128,974,490.20
  5. Step 5: Solve for x
    x = 128,974,490.20/12,907.31
  6. Step 6: Final answer
    x = 9,992.36

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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.