Home / 28,212.35-38,915.34-18,153.86

Finding the Fourth Proportional to 28,212.35, 38,915.34 and 18,153.86

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Solution

The fourth proportional to 28,212.35, 38,915.34 and 18,153.86 is: 25,040.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,212.35 : 38,915.34 = 18,153.86 : x
  2. Step 2: Convert to fraction form
    28,212.35/38,915.34 = 18,153.86/x
  3. Step 3: Cross multiply
    28,212.35x = 38,915.34 × 18,153.86
  4. Step 4: Simplify right side
    28,212.35x = 706,463,634.21
  5. Step 5: Solve for x
    x = 706,463,634.21/28,212.35
  6. Step 6: Final answer
    x = 25,040.94

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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.