Home / 23,390.90-32,279.05-12,780.30

Finding the Fourth Proportional to 23,390.90, 32,279.05 and 12,780.30

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Solution

The fourth proportional to 23,390.90, 32,279.05 and 12,780.30 is: 17,636.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,390.90 : 32,279.05 = 12,780.30 : x
  2. Step 2: Convert to fraction form
    23,390.90/32,279.05 = 12,780.30/x
  3. Step 3: Cross multiply
    23,390.90x = 32,279.05 × 12,780.30
  4. Step 4: Simplify right side
    23,390.90x = 412,535,942.72
  5. Step 5: Solve for x
    x = 412,535,942.72/23,390.90
  6. Step 6: Final answer
    x = 17,636.60

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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.