Home / 12,955.50-19,436.10-4,190.31

Finding the Fourth Proportional to 12,955.50, 19,436.10 and 4,190.31

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Solution

The fourth proportional to 12,955.50, 19,436.10 and 4,190.31 is: 6,286.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,955.50 : 19,436.10 = 4,190.31 : x
  2. Step 2: Convert to fraction form
    12,955.50/19,436.10 = 4,190.31/x
  3. Step 3: Cross multiply
    12,955.50x = 19,436.10 × 4,190.31
  4. Step 4: Simplify right side
    12,955.50x = 81,443,284.19
  5. Step 5: Solve for x
    x = 81,443,284.19/12,955.50
  6. Step 6: Final answer
    x = 6,286.39

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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.