Home / 21,955.85-30,292.13-13,453.58

Finding the Fourth Proportional to 21,955.85, 30,292.13 and 13,453.58

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Solution

The fourth proportional to 21,955.85, 30,292.13 and 13,453.58 is: 18,561.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,955.85 : 30,292.13 = 13,453.58 : x
  2. Step 2: Convert to fraction form
    21,955.85/30,292.13 = 13,453.58/x
  3. Step 3: Cross multiply
    21,955.85x = 30,292.13 × 13,453.58
  4. Step 4: Simplify right side
    21,955.85x = 407,537,375.60
  5. Step 5: Solve for x
    x = 407,537,375.60/21,955.85
  6. Step 6: Final answer
    x = 18,561.68

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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.