Home / 15,235.49-21,004.31-13,021.16

Finding the Fourth Proportional to 15,235.49, 21,004.31 and 13,021.16

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Solution

The fourth proportional to 15,235.49, 21,004.31 and 13,021.16 is: 17,951.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,235.49 : 21,004.31 = 13,021.16 : x
  2. Step 2: Convert to fraction form
    15,235.49/21,004.31 = 13,021.16/x
  3. Step 3: Cross multiply
    15,235.49x = 21,004.31 × 13,021.16
  4. Step 4: Simplify right side
    15,235.49x = 273,500,408.73
  5. Step 5: Solve for x
    x = 273,500,408.73/15,235.49
  6. Step 6: Final answer
    x = 17,951.53

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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.