Home / 14,080.88-21,120.50-4,220.40

Finding the Fourth Proportional to 14,080.88, 21,120.50 and 4,220.40

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Solution

The fourth proportional to 14,080.88, 21,120.50 and 4,220.40 is: 6,330.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,080.88 : 21,120.50 = 4,220.40 : x
  2. Step 2: Convert to fraction form
    14,080.88/21,120.50 = 4,220.40/x
  3. Step 3: Cross multiply
    14,080.88x = 21,120.50 × 4,220.40
  4. Step 4: Simplify right side
    14,080.88x = 89,136,958.20
  5. Step 5: Solve for x
    x = 89,136,958.20/14,080.88
  6. Step 6: Final answer
    x = 6,330.35

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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.