Home / 23,391.39-32,279.74-12,780.80

Finding the Fourth Proportional to 23,391.39, 32,279.74 and 12,780.80

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Solution

The fourth proportional to 23,391.39, 32,279.74 and 12,780.80 is: 17,637.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,391.39 : 32,279.74 = 12,780.80 : x
  2. Step 2: Convert to fraction form
    23,391.39/32,279.74 = 12,780.80/x
  3. Step 3: Cross multiply
    23,391.39x = 32,279.74 × 12,780.80
  4. Step 4: Simplify right side
    23,391.39x = 412,560,900.99
  5. Step 5: Solve for x
    x = 412,560,900.99/23,391.39
  6. Step 6: Final answer
    x = 17,637.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.