Home / 20,512.60-30,768.90-13,514.20

Finding the Fourth Proportional to 20,512.60, 30,768.90 and 13,514.20

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Solution

The fourth proportional to 20,512.60, 30,768.90 and 13,514.20 is: 20,271.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.60 : 30,768.90 = 13,514.20 : x
  2. Step 2: Convert to fraction form
    20,512.60/30,768.90 = 13,514.20/x
  3. Step 3: Cross multiply
    20,512.60x = 30,768.90 × 13,514.20
  4. Step 4: Simplify right side
    20,512.60x = 415,817,068.38
  5. Step 5: Solve for x
    x = 415,817,068.38/20,512.60
  6. Step 6: Final answer
    x = 20,271.30

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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.