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Finding the Fourth Proportional to 13,027.32, 17,978.04 and 7,994.34

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Solution

The fourth proportional to 13,027.32, 17,978.04 and 7,994.34 is: 11,032.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,027.32 : 17,978.04 = 7,994.34 : x
  2. Step 2: Convert to fraction form
    13,027.32/17,978.04 = 7,994.34/x
  3. Step 3: Cross multiply
    13,027.32x = 17,978.04 × 7,994.34
  4. Step 4: Simplify right side
    13,027.32x = 143,722,564.29
  5. Step 5: Solve for x
    x = 143,722,564.29/13,027.32
  6. Step 6: Final answer
    x = 11,032.40

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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.