Home / 20,913.74-28,861.04-11,353.64

Finding the Fourth Proportional to 20,913.74, 28,861.04 and 11,353.64

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Solution

The fourth proportional to 20,913.74, 28,861.04 and 11,353.64 is: 15,668.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,913.74 : 28,861.04 = 11,353.64 : x
  2. Step 2: Convert to fraction form
    20,913.74/28,861.04 = 11,353.64/x
  3. Step 3: Cross multiply
    20,913.74x = 28,861.04 × 11,353.64
  4. Step 4: Simplify right side
    20,913.74x = 327,677,801.42
  5. Step 5: Solve for x
    x = 327,677,801.42/20,913.74
  6. Step 6: Final answer
    x = 15,668.06

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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.