Home / 21,202.52-29,272.18-13,255.52

Finding the Fourth Proportional to 21,202.52, 29,272.18 and 13,255.52

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Solution

The fourth proportional to 21,202.52, 29,272.18 and 13,255.52 is: 18,300.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,202.52 : 29,272.18 = 13,255.52 : x
  2. Step 2: Convert to fraction form
    21,202.52/29,272.18 = 13,255.52/x
  3. Step 3: Cross multiply
    21,202.52x = 29,272.18 × 13,255.52
  4. Step 4: Simplify right side
    21,202.52x = 388,017,967.43
  5. Step 5: Solve for x
    x = 388,017,967.43/21,202.52
  6. Step 6: Final answer
    x = 18,300.56

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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.