Home / 21,759.47-30,027.81-12,200.91

Finding the Fourth Proportional to 21,759.47, 30,027.81 and 12,200.91

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Solution

The fourth proportional to 21,759.47, 30,027.81 and 12,200.91 is: 16,837.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,759.47 : 30,027.81 = 12,200.91 : x
  2. Step 2: Convert to fraction form
    21,759.47/30,027.81 = 12,200.91/x
  3. Step 3: Cross multiply
    21,759.47x = 30,027.81 × 12,200.91
  4. Step 4: Simplify right side
    21,759.47x = 366,366,709.36
  5. Step 5: Solve for x
    x = 366,366,709.36/21,759.47
  6. Step 6: Final answer
    x = 16,837.12

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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.