Home / 23,391.15-32,279.40-12,780.56

Finding the Fourth Proportional to 23,391.15, 32,279.40 and 12,780.56

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Solution

The fourth proportional to 23,391.15, 32,279.40 and 12,780.56 is: 17,636.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,391.15 : 32,279.40 = 12,780.56 : x
  2. Step 2: Convert to fraction form
    23,391.15/32,279.40 = 12,780.56/x
  3. Step 3: Cross multiply
    23,391.15x = 32,279.40 × 12,780.56
  4. Step 4: Simplify right side
    23,391.15x = 412,548,647.07
  5. Step 5: Solve for x
    x = 412,548,647.07/23,391.15
  6. Step 6: Final answer
    x = 17,636.95

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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.