Home / 20,707.21-28,575.17-12,654.33

Finding the Fourth Proportional to 20,707.21, 28,575.17 and 12,654.33

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Solution

The fourth proportional to 20,707.21, 28,575.17 and 12,654.33 is: 17,462.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,707.21 : 28,575.17 = 12,654.33 : x
  2. Step 2: Convert to fraction form
    20,707.21/28,575.17 = 12,654.33/x
  3. Step 3: Cross multiply
    20,707.21x = 28,575.17 × 12,654.33
  4. Step 4: Simplify right side
    20,707.21x = 361,599,599.35
  5. Step 5: Solve for x
    x = 361,599,599.35/20,707.21
  6. Step 6: Final answer
    x = 17,462.50

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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.