Home / 14,289.18-19,720.26-8,321.38

Finding the Fourth Proportional to 14,289.18, 19,720.26 and 8,321.38

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Solution

The fourth proportional to 14,289.18, 19,720.26 and 8,321.38 is: 11,484.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,289.18 : 19,720.26 = 8,321.38 : x
  2. Step 2: Convert to fraction form
    14,289.18/19,720.26 = 8,321.38/x
  3. Step 3: Cross multiply
    14,289.18x = 19,720.26 × 8,321.38
  4. Step 4: Simplify right side
    14,289.18x = 164,099,777.16
  5. Step 5: Solve for x
    x = 164,099,777.16/14,289.18
  6. Step 6: Final answer
    x = 11,484.20

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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.