Home / 20,748.42-28,632.42-11,317.05

Finding the Fourth Proportional to 20,748.42, 28,632.42 and 11,317.05

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Solution

The fourth proportional to 20,748.42, 28,632.42 and 11,317.05 is: 15,617.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748.42 : 28,632.42 = 11,317.05 : x
  2. Step 2: Convert to fraction form
    20,748.42/28,632.42 = 11,317.05/x
  3. Step 3: Cross multiply
    20,748.42x = 28,632.42 × 11,317.05
  4. Step 4: Simplify right side
    20,748.42x = 324,034,528.76
  5. Step 5: Solve for x
    x = 324,034,528.76/20,748.42
  6. Step 6: Final answer
    x = 15,617.31

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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.