Home / 20,336.82-28,050.35-18,663.63

Finding the Fourth Proportional to 20,336.82, 28,050.35 and 18,663.63

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Solution

The fourth proportional to 20,336.82, 28,050.35 and 18,663.63 is: 25,742.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,336.82 : 28,050.35 = 18,663.63 : x
  2. Step 2: Convert to fraction form
    20,336.82/28,050.35 = 18,663.63/x
  3. Step 3: Cross multiply
    20,336.82x = 28,050.35 × 18,663.63
  4. Step 4: Simplify right side
    20,336.82x = 523,521,260.45
  5. Step 5: Solve for x
    x = 523,521,260.45/20,336.82
  6. Step 6: Final answer
    x = 25,742.53

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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.