Home / 21,029.49-29,020.68-12,077.55

Finding the Fourth Proportional to 21,029.49, 29,020.68 and 12,077.55

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Solution

The fourth proportional to 21,029.49, 29,020.68 and 12,077.55 is: 16,667.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,029.49 : 29,020.68 = 12,077.55 : x
  2. Step 2: Convert to fraction form
    21,029.49/29,020.68 = 12,077.55/x
  3. Step 3: Cross multiply
    21,029.49x = 29,020.68 × 12,077.55
  4. Step 4: Simplify right side
    21,029.49x = 350,498,713.73
  5. Step 5: Solve for x
    x = 350,498,713.73/21,029.49
  6. Step 6: Final answer
    x = 16,667.01

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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.