Home / 20,770.38-28,653.14-13,597.13

Finding the Fourth Proportional to 20,770.38, 28,653.14 and 13,597.13

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Solution

The fourth proportional to 20,770.38, 28,653.14 and 13,597.13 is: 18,757.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,770.38 : 28,653.14 = 13,597.13 : x
  2. Step 2: Convert to fraction form
    20,770.38/28,653.14 = 13,597.13/x
  3. Step 3: Cross multiply
    20,770.38x = 28,653.14 × 13,597.13
  4. Step 4: Simplify right side
    20,770.38x = 389,600,258.24
  5. Step 5: Solve for x
    x = 389,600,258.24/20,770.38
  6. Step 6: Final answer
    x = 18,757.49

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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.