Home / 14,309.80-21,522.30-12,812.20

Finding the Fourth Proportional to 14,309.80, 21,522.30 and 12,812.20

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Solution

The fourth proportional to 14,309.80, 21,522.30 and 12,812.20 is: 19,269.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,309.80 : 21,522.30 = 12,812.20 : x
  2. Step 2: Convert to fraction form
    14,309.80/21,522.30 = 12,812.20/x
  3. Step 3: Cross multiply
    14,309.80x = 21,522.30 × 12,812.20
  4. Step 4: Simplify right side
    14,309.80x = 275,748,012.06
  5. Step 5: Solve for x
    x = 275,748,012.06/14,309.80
  6. Step 6: Final answer
    x = 19,269.87

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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.