Home / 13,445.75-20,169.69-4,086.58

Finding the Fourth Proportional to 13,445.75, 20,169.69 and 4,086.58

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Solution

The fourth proportional to 13,445.75, 20,169.69 and 4,086.58 is: 6,130.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.75 : 20,169.69 = 4,086.58 : x
  2. Step 2: Convert to fraction form
    13,445.75/20,169.69 = 4,086.58/x
  3. Step 3: Cross multiply
    13,445.75x = 20,169.69 × 4,086.58
  4. Step 4: Simplify right side
    13,445.75x = 82,425,051.76
  5. Step 5: Solve for x
    x = 82,425,051.76/13,445.75
  6. Step 6: Final answer
    x = 6,130.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.