Home / 21,814.52-30,104.40-21,060.20

Finding the Fourth Proportional to 21,814.52, 30,104.40 and 21,060.20

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Solution

The fourth proportional to 21,814.52, 30,104.40 and 21,060.20 is: 29,063.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,814.52 : 30,104.40 = 21,060.20 : x
  2. Step 2: Convert to fraction form
    21,814.52/30,104.40 = 21,060.20/x
  3. Step 3: Cross multiply
    21,814.52x = 30,104.40 × 21,060.20
  4. Step 4: Simplify right side
    21,814.52x = 634,004,684.88
  5. Step 5: Solve for x
    x = 634,004,684.88/21,814.52
  6. Step 6: Final answer
    x = 29,063.43

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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.