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Finding the Fourth Proportional to 14,581.80, 21,861.90 and 5,812.20

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Solution

The fourth proportional to 14,581.80, 21,861.90 and 5,812.20 is: 8,714.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,581.80 : 21,861.90 = 5,812.20 : x
  2. Step 2: Convert to fraction form
    14,581.80/21,861.90 = 5,812.20/x
  3. Step 3: Cross multiply
    14,581.80x = 21,861.90 × 5,812.20
  4. Step 4: Simplify right side
    14,581.80x = 127,065,735.18
  5. Step 5: Solve for x
    x = 127,065,735.18/14,581.80
  6. Step 6: Final answer
    x = 8,714.00

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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.