Home / 20,623.11-28,459.42-11,670.58

Finding the Fourth Proportional to 20,623.11, 28,459.42 and 11,670.58

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Solution

The fourth proportional to 20,623.11, 28,459.42 and 11,670.58 is: 16,105.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,623.11 : 28,459.42 = 11,670.58 : x
  2. Step 2: Convert to fraction form
    20,623.11/28,459.42 = 11,670.58/x
  3. Step 3: Cross multiply
    20,623.11x = 28,459.42 × 11,670.58
  4. Step 4: Simplify right side
    20,623.11x = 332,137,937.86
  5. Step 5: Solve for x
    x = 332,137,937.86/20,623.11
  6. Step 6: Final answer
    x = 16,105.13

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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.