Home / 28,211.35-38,913.96-18,152.86

Finding the Fourth Proportional to 28,211.35, 38,913.96 and 18,152.86

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Solution

The fourth proportional to 28,211.35, 38,913.96 and 18,152.86 is: 25,039.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,211.35 : 38,913.96 = 18,152.86 : x
  2. Step 2: Convert to fraction form
    28,211.35/38,913.96 = 18,152.86/x
  3. Step 3: Cross multiply
    28,211.35x = 38,913.96 × 18,152.86
  4. Step 4: Simplify right side
    28,211.35x = 706,399,667.93
  5. Step 5: Solve for x
    x = 706,399,667.93/28,211.35
  6. Step 6: Final answer
    x = 25,039.56

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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.