Home / 20,676.96-28,535.04-12,294.72

Finding the Fourth Proportional to 20,676.96, 28,535.04 and 12,294.72

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Solution

The fourth proportional to 20,676.96, 28,535.04 and 12,294.72 is: 16,967.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676.96 : 28,535.04 = 12,294.72 : x
  2. Step 2: Convert to fraction form
    20,676.96/28,535.04 = 12,294.72/x
  3. Step 3: Cross multiply
    20,676.96x = 28,535.04 × 12,294.72
  4. Step 4: Simplify right side
    20,676.96x = 350,830,326.99
  5. Step 5: Solve for x
    x = 350,830,326.99/20,676.96
  6. Step 6: Final answer
    x = 16,967.21

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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.