Home / 12,588.50-17,372.13-6,999.38

Finding the Fourth Proportional to 12,588.50, 17,372.13 and 6,999.38

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Solution

The fourth proportional to 12,588.50, 17,372.13 and 6,999.38 is: 9,659.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,588.50 : 17,372.13 = 6,999.38 : x
  2. Step 2: Convert to fraction form
    12,588.50/17,372.13 = 6,999.38/x
  3. Step 3: Cross multiply
    12,588.50x = 17,372.13 × 6,999.38
  4. Step 4: Simplify right side
    12,588.50x = 121,594,139.28
  5. Step 5: Solve for x
    x = 121,594,139.28/12,588.50
  6. Step 6: Final answer
    x = 9,659.14

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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.