Home / 12,887.45-19,331.58-6,131.57

Finding the Fourth Proportional to 12,887.45, 19,331.58 and 6,131.57

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Solution

The fourth proportional to 12,887.45, 19,331.58 and 6,131.57 is: 9,197.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887.45 : 19,331.58 = 6,131.57 : x
  2. Step 2: Convert to fraction form
    12,887.45/19,331.58 = 6,131.57/x
  3. Step 3: Cross multiply
    12,887.45x = 19,331.58 × 6,131.57
  4. Step 4: Simplify right side
    12,887.45x = 118,532,862.32
  5. Step 5: Solve for x
    x = 118,532,862.32/12,887.45
  6. Step 6: Final answer
    x = 9,197.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.