Home / 12,887.31-19,331.70-4,003.48

Finding the Fourth Proportional to 12,887.31, 19,331.70 and 4,003.48

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Solution

The fourth proportional to 12,887.31, 19,331.70 and 4,003.48 is: 6,005.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887.31 : 19,331.70 = 4,003.48 : x
  2. Step 2: Convert to fraction form
    12,887.31/19,331.70 = 4,003.48/x
  3. Step 3: Cross multiply
    12,887.31x = 19,331.70 × 4,003.48
  4. Step 4: Simplify right side
    12,887.31x = 77,394,074.32
  5. Step 5: Solve for x
    x = 77,394,074.32/12,887.31
  6. Step 6: Final answer
    x = 6,005.45

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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.