Home / 20,757.56-28,635.73-13,587.62

Finding the Fourth Proportional to 20,757.56, 28,635.73 and 13,587.62

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Solution

The fourth proportional to 20,757.56, 28,635.73 and 13,587.62 is: 18,744.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,757.56 : 28,635.73 = 13,587.62 : x
  2. Step 2: Convert to fraction form
    20,757.56/28,635.73 = 13,587.62/x
  3. Step 3: Cross multiply
    20,757.56x = 28,635.73 × 13,587.62
  4. Step 4: Simplify right side
    20,757.56x = 389,091,240.51
  5. Step 5: Solve for x
    x = 389,091,240.51/20,757.56
  6. Step 6: Final answer
    x = 18,744.56

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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.