Home / 18,915.25-26,103.86-10,531.75

Finding the Fourth Proportional to 18,915.25, 26,103.86 and 10,531.75

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Solution

The fourth proportional to 18,915.25, 26,103.86 and 10,531.75 is: 14,534.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915.25 : 26,103.86 = 10,531.75 : x
  2. Step 2: Convert to fraction form
    18,915.25/26,103.86 = 10,531.75/x
  3. Step 3: Cross multiply
    18,915.25x = 26,103.86 × 10,531.75
  4. Step 4: Simplify right side
    18,915.25x = 274,919,327.56
  5. Step 5: Solve for x
    x = 274,919,327.56/18,915.25
  6. Step 6: Final answer
    x = 14,534.27

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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.