Home / 20,885.88-28,823.66-12,393.03

Finding the Fourth Proportional to 20,885.88, 28,823.66 and 12,393.03

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Solution

The fourth proportional to 20,885.88, 28,823.66 and 12,393.03 is: 17,103.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885.88 : 28,823.66 = 12,393.03 : x
  2. Step 2: Convert to fraction form
    20,885.88/28,823.66 = 12,393.03/x
  3. Step 3: Cross multiply
    20,885.88x = 28,823.66 × 12,393.03
  4. Step 4: Simplify right side
    20,885.88x = 357,212,483.09
  5. Step 5: Solve for x
    x = 357,212,483.09/20,885.88
  6. Step 6: Final answer
    x = 17,103.06

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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.