Home / 14,229.96-21,347.64-6,438.75

Finding the Fourth Proportional to 14,229.96, 21,347.64 and 6,438.75

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Solution

The fourth proportional to 14,229.96, 21,347.64 and 6,438.75 is: 9,659.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,229.96 : 21,347.64 = 6,438.75 : x
  2. Step 2: Convert to fraction form
    14,229.96/21,347.64 = 6,438.75/x
  3. Step 3: Cross multiply
    14,229.96x = 21,347.64 × 6,438.75
  4. Step 4: Simplify right side
    14,229.96x = 137,452,117.05
  5. Step 5: Solve for x
    x = 137,452,117.05/14,229.96
  6. Step 6: Final answer
    x = 9,659.35

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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.