Home / 20,166.30-27,829.44-11,213.91

Finding the Fourth Proportional to 20,166.30, 27,829.44 and 11,213.91

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Solution

The fourth proportional to 20,166.30, 27,829.44 and 11,213.91 is: 15,475.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,166.30 : 27,829.44 = 11,213.91 : x
  2. Step 2: Convert to fraction form
    20,166.30/27,829.44 = 11,213.91/x
  3. Step 3: Cross multiply
    20,166.30x = 27,829.44 × 11,213.91
  4. Step 4: Simplify right side
    20,166.30x = 312,076,835.51
  5. Step 5: Solve for x
    x = 312,076,835.51/20,166.30
  6. Step 6: Final answer
    x = 15,475.17

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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.