Home / 14,300.40-21,450.60-11,821.80

Finding the Fourth Proportional to 14,300.40, 21,450.60 and 11,821.80

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Solution

The fourth proportional to 14,300.40, 21,450.60 and 11,821.80 is: 17,732.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,300.40 : 21,450.60 = 11,821.80 : x
  2. Step 2: Convert to fraction form
    14,300.40/21,450.60 = 11,821.80/x
  3. Step 3: Cross multiply
    14,300.40x = 21,450.60 × 11,821.80
  4. Step 4: Simplify right side
    14,300.40x = 253,584,703.08
  5. Step 5: Solve for x
    x = 253,584,703.08/14,300.40
  6. Step 6: Final answer
    x = 17,732.70

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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.