Home / 14,480.20-21,720.30-14,285.80

Finding the Fourth Proportional to 14,480.20, 21,720.30 and 14,285.80

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Solution

The fourth proportional to 14,480.20, 21,720.30 and 14,285.80 is: 21,428.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,480.20 : 21,720.30 = 14,285.80 : x
  2. Step 2: Convert to fraction form
    14,480.20/21,720.30 = 14,285.80/x
  3. Step 3: Cross multiply
    14,480.20x = 21,720.30 × 14,285.80
  4. Step 4: Simplify right side
    14,480.20x = 310,291,861.74
  5. Step 5: Solve for x
    x = 310,291,861.74/14,480.20
  6. Step 6: Final answer
    x = 21,428.70

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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.