Home / 14,515.72-20,031.30-8,228.68

Finding the Fourth Proportional to 14,515.72, 20,031.30 and 8,228.68

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Solution

The fourth proportional to 14,515.72, 20,031.30 and 8,228.68 is: 11,355.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,515.72 : 20,031.30 = 8,228.68 : x
  2. Step 2: Convert to fraction form
    14,515.72/20,031.30 = 8,228.68/x
  3. Step 3: Cross multiply
    14,515.72x = 20,031.30 × 8,228.68
  4. Step 4: Simplify right side
    14,515.72x = 164,831,157.68
  5. Step 5: Solve for x
    x = 164,831,157.68/14,515.72
  6. Step 6: Final answer
    x = 11,355.36

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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.