Home / 12,811.29-19,219.36-4,047.49

Finding the Fourth Proportional to 12,811.29, 19,219.36 and 4,047.49

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Solution

The fourth proportional to 12,811.29, 19,219.36 and 4,047.49 is: 6,072.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,811.29 : 19,219.36 = 4,047.49 : x
  2. Step 2: Convert to fraction form
    12,811.29/19,219.36 = 4,047.49/x
  3. Step 3: Cross multiply
    12,811.29x = 19,219.36 × 4,047.49
  4. Step 4: Simplify right side
    12,811.29x = 77,790,167.41
  5. Step 5: Solve for x
    x = 77,790,167.41/12,811.29
  6. Step 6: Final answer
    x = 6,072.00

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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.