Home / 21,636.80-29,859.06-12,077.62

Finding the Fourth Proportional to 21,636.80, 29,859.06 and 12,077.62

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Solution

The fourth proportional to 21,636.80, 29,859.06 and 12,077.62 is: 16,667.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,636.80 : 29,859.06 = 12,077.62 : x
  2. Step 2: Convert to fraction form
    21,636.80/29,859.06 = 12,077.62/x
  3. Step 3: Cross multiply
    21,636.80x = 29,859.06 × 12,077.62
  4. Step 4: Simplify right side
    21,636.80x = 360,626,380.24
  5. Step 5: Solve for x
    x = 360,626,380.24/21,636.80
  6. Step 6: Final answer
    x = 16,667.27

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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.