Home / 12,999.08-17,937.54-7,961

Finding the Fourth Proportional to 12,999.08, 17,937.54 and 7,961

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Solution

The fourth proportional to 12,999.08, 17,937.54 and 7,961 is: 10,985.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999.08 : 17,937.54 = 7,961 : x
  2. Step 2: Convert to fraction form
    12,999.08/17,937.54 = 7,961/x
  3. Step 3: Cross multiply
    12,999.08x = 17,937.54 × 7,961
  4. Step 4: Simplify right side
    12,999.08x = 142,800,755.94
  5. Step 5: Solve for x
    x = 142,800,755.94/12,999.08
  6. Step 6: Final answer
    x = 10,985.45

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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.