Home / 20,127.90-27,776.30-11,631.80

Finding the Fourth Proportional to 20,127.90, 27,776.30 and 11,631.80

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Solution

The fourth proportional to 20,127.90, 27,776.30 and 11,631.80 is: 16,051.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.90 : 27,776.30 = 11,631.80 : x
  2. Step 2: Convert to fraction form
    20,127.90/27,776.30 = 11,631.80/x
  3. Step 3: Cross multiply
    20,127.90x = 27,776.30 × 11,631.80
  4. Step 4: Simplify right side
    20,127.90x = 323,088,366.34
  5. Step 5: Solve for x
    x = 323,088,366.34/20,127.90
  6. Step 6: Final answer
    x = 16,051.77

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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.