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Finding the Fourth Proportional to 12,905.04, 17,810.30 and 7,241.32

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Solution

The fourth proportional to 12,905.04, 17,810.30 and 7,241.32 is: 9,993.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905.04 : 17,810.30 = 7,241.32 : x
  2. Step 2: Convert to fraction form
    12,905.04/17,810.30 = 7,241.32/x
  3. Step 3: Cross multiply
    12,905.04x = 17,810.30 × 7,241.32
  4. Step 4: Simplify right side
    12,905.04x = 128,969,992.54
  5. Step 5: Solve for x
    x = 128,969,992.54/12,905.04
  6. Step 6: Final answer
    x = 9,993.77

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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.