Home / 13,778.11-19,020.86-12,433.51

Finding the Fourth Proportional to 13,778.11, 19,020.86 and 12,433.51

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Solution

The fourth proportional to 13,778.11, 19,020.86 and 12,433.51 is: 17,164.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.11 : 19,020.86 = 12,433.51 : x
  2. Step 2: Convert to fraction form
    13,778.11/19,020.86 = 12,433.51/x
  3. Step 3: Cross multiply
    13,778.11x = 19,020.86 × 12,433.51
  4. Step 4: Simplify right side
    13,778.11x = 236,496,053.02
  5. Step 5: Solve for x
    x = 236,496,053.02/13,778.11
  6. Step 6: Final answer
    x = 17,164.62

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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.