Home / 12,588.75-17,372.48-6,999.75

Finding the Fourth Proportional to 12,588.75, 17,372.48 and 6,999.75

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Solution

The fourth proportional to 12,588.75, 17,372.48 and 6,999.75 is: 9,659.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,588.75 : 17,372.48 = 6,999.75 : x
  2. Step 2: Convert to fraction form
    12,588.75/17,372.48 = 6,999.75/x
  3. Step 3: Cross multiply
    12,588.75x = 17,372.48 × 6,999.75
  4. Step 4: Simplify right side
    12,588.75x = 121,602,981.88
  5. Step 5: Solve for x
    x = 121,602,981.88/12,588.75
  6. Step 6: Final answer
    x = 9,659.66

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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.