Home / 20,358.32-28,094.94-11,405.36

Finding the Fourth Proportional to 20,358.32, 28,094.94 and 11,405.36

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Solution

The fourth proportional to 20,358.32, 28,094.94 and 11,405.36 is: 15,739.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,358.32 : 28,094.94 = 11,405.36 : x
  2. Step 2: Convert to fraction form
    20,358.32/28,094.94 = 11,405.36/x
  3. Step 3: Cross multiply
    20,358.32x = 28,094.94 × 11,405.36
  4. Step 4: Simplify right side
    20,358.32x = 320,432,904.88
  5. Step 5: Solve for x
    x = 320,432,904.88/20,358.32
  6. Step 6: Final answer
    x = 15,739.65

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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.