Home / 13,018.12-19,550.87-12,489.59

Finding the Fourth Proportional to 13,018.12, 19,550.87 and 12,489.59

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Solution

The fourth proportional to 13,018.12, 19,550.87 and 12,489.59 is: 18,757.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,018.12 : 19,550.87 = 12,489.59 : x
  2. Step 2: Convert to fraction form
    13,018.12/19,550.87 = 12,489.59/x
  3. Step 3: Cross multiply
    13,018.12x = 19,550.87 × 12,489.59
  4. Step 4: Simplify right side
    13,018.12x = 244,182,383.71
  5. Step 5: Solve for x
    x = 244,182,383.71/13,018.12
  6. Step 6: Final answer
    x = 18,757.12

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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.