Home / 20,673.30-28,529.43-11,720.58

Finding the Fourth Proportional to 20,673.30, 28,529.43 and 11,720.58

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Solution

The fourth proportional to 20,673.30, 28,529.43 and 11,720.58 is: 16,174.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,673.30 : 28,529.43 = 11,720.58 : x
  2. Step 2: Convert to fraction form
    20,673.30/28,529.43 = 11,720.58/x
  3. Step 3: Cross multiply
    20,673.30x = 28,529.43 × 11,720.58
  4. Step 4: Simplify right side
    20,673.30x = 334,381,466.67
  5. Step 5: Solve for x
    x = 334,381,466.67/20,673.30
  6. Step 6: Final answer
    x = 16,174.56

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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.