Home / 13,459.36-20,175.46-8,465.30

Finding the Fourth Proportional to 13,459.36, 20,175.46 and 8,465.30

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Solution

The fourth proportional to 13,459.36, 20,175.46 and 8,465.30 is: 12,689.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,459.36 : 20,175.46 = 8,465.30 : x
  2. Step 2: Convert to fraction form
    13,459.36/20,175.46 = 8,465.30/x
  3. Step 3: Cross multiply
    13,459.36x = 20,175.46 × 8,465.30
  4. Step 4: Simplify right side
    13,459.36x = 170,791,321.54
  5. Step 5: Solve for x
    x = 170,791,321.54/13,459.36
  6. Step 6: Final answer
    x = 12,689.41

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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.