Home / 13,392.21-19,988.61-11,605.29

Finding the Fourth Proportional to 13,392.21, 19,988.61 and 11,605.29

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Solution

The fourth proportional to 13,392.21, 19,988.61 and 11,605.29 is: 17,321.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,392.21 : 19,988.61 = 11,605.29 : x
  2. Step 2: Convert to fraction form
    13,392.21/19,988.61 = 11,605.29/x
  3. Step 3: Cross multiply
    13,392.21x = 19,988.61 × 11,605.29
  4. Step 4: Simplify right side
    13,392.21x = 231,973,615.75
  5. Step 5: Solve for x
    x = 231,973,615.75/13,392.21
  6. Step 6: Final answer
    x = 17,321.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.