Home / 13,731.63-18,943.30-8,064.57

Finding the Fourth Proportional to 13,731.63, 18,943.30 and 8,064.57

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Solution

The fourth proportional to 13,731.63, 18,943.30 and 8,064.57 is: 11,125.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,731.63 : 18,943.30 = 8,064.57 : x
  2. Step 2: Convert to fraction form
    13,731.63/18,943.30 = 8,064.57/x
  3. Step 3: Cross multiply
    13,731.63x = 18,943.30 × 8,064.57
  4. Step 4: Simplify right side
    13,731.63x = 152,769,568.88
  5. Step 5: Solve for x
    x = 152,769,568.88/13,731.63
  6. Step 6: Final answer
    x = 11,125.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.