Home / 12,887.49-19,331.64-6,131.60

Finding the Fourth Proportional to 12,887.49, 19,331.64 and 6,131.60

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Solution

The fourth proportional to 12,887.49, 19,331.64 and 6,131.60 is: 9,197.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887.49 : 19,331.64 = 6,131.60 : x
  2. Step 2: Convert to fraction form
    12,887.49/19,331.64 = 6,131.60/x
  3. Step 3: Cross multiply
    12,887.49x = 19,331.64 × 6,131.60
  4. Step 4: Simplify right side
    12,887.49x = 118,533,883.82
  5. Step 5: Solve for x
    x = 118,533,883.82/12,887.49
  6. Step 6: Final answer
    x = 9,197.59

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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.