Home / 13,534.29-18,667.89-12,418.92

Finding the Fourth Proportional to 13,534.29, 18,667.89 and 12,418.92

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Solution

The fourth proportional to 13,534.29, 18,667.89 and 12,418.92 is: 17,129.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,534.29 : 18,667.89 = 12,418.92 : x
  2. Step 2: Convert to fraction form
    13,534.29/18,667.89 = 12,418.92/x
  3. Step 3: Cross multiply
    13,534.29x = 18,667.89 × 12,418.92
  4. Step 4: Simplify right side
    13,534.29x = 231,835,032.48
  5. Step 5: Solve for x
    x = 231,835,032.48/13,534.29
  6. Step 6: Final answer
    x = 17,129.46

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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.