Home / 13,689.44-20,536.69-4,331.81

Finding the Fourth Proportional to 13,689.44, 20,536.69 and 4,331.81

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Solution

The fourth proportional to 13,689.44, 20,536.69 and 4,331.81 is: 6,498.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,689.44 : 20,536.69 = 4,331.81 : x
  2. Step 2: Convert to fraction form
    13,689.44/20,536.69 = 4,331.81/x
  3. Step 3: Cross multiply
    13,689.44x = 20,536.69 × 4,331.81
  4. Step 4: Simplify right side
    13,689.44x = 88,961,017.45
  5. Step 5: Solve for x
    x = 88,961,017.45/13,689.44
  6. Step 6: Final answer
    x = 6,498.52

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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.