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Finding the Fourth Proportional to 12,954.31, 17,879.93 and 7,579.25

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Solution

The fourth proportional to 12,954.31, 17,879.93 and 7,579.25 is: 10,461.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,954.31 : 17,879.93 = 7,579.25 : x
  2. Step 2: Convert to fraction form
    12,954.31/17,879.93 = 7,579.25/x
  3. Step 3: Cross multiply
    12,954.31x = 17,879.93 × 7,579.25
  4. Step 4: Simplify right side
    12,954.31x = 135,516,389.00
  5. Step 5: Solve for x
    x = 135,516,389.00/12,954.31
  6. Step 6: Final answer
    x = 10,461.11

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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.