Home / 20,358.27-28,096.05-11,407.77

Finding the Fourth Proportional to 20,358.27, 28,096.05 and 11,407.77

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Solution

The fourth proportional to 20,358.27, 28,096.05 and 11,407.77 is: 15,743.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,358.27 : 28,096.05 = 11,407.77 : x
  2. Step 2: Convert to fraction form
    20,358.27/28,096.05 = 11,407.77/x
  3. Step 3: Cross multiply
    20,358.27x = 28,096.05 × 11,407.77
  4. Step 4: Simplify right side
    20,358.27x = 320,513,276.31
  5. Step 5: Solve for x
    x = 320,513,276.31/20,358.27
  6. Step 6: Final answer
    x = 15,743.64

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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.