Home / 13,689.89-20,536.85-4,327.79

Finding the Fourth Proportional to 13,689.89, 20,536.85 and 4,327.79

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Solution

The fourth proportional to 13,689.89, 20,536.85 and 4,327.79 is: 6,492.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,689.89 : 20,536.85 = 4,327.79 : x
  2. Step 2: Convert to fraction form
    13,689.89/20,536.85 = 4,327.79/x
  3. Step 3: Cross multiply
    13,689.89x = 20,536.85 × 4,327.79
  4. Step 4: Simplify right side
    13,689.89x = 88,879,049.74
  5. Step 5: Solve for x
    x = 88,879,049.74/13,689.89
  6. Step 6: Final answer
    x = 6,492.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.