Home / 20,904.08-28,847.48-11,343.76

Finding the Fourth Proportional to 20,904.08, 28,847.48 and 11,343.76

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Solution

The fourth proportional to 20,904.08, 28,847.48 and 11,343.76 is: 15,654.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.08 : 28,847.48 = 11,343.76 : x
  2. Step 2: Convert to fraction form
    20,904.08/28,847.48 = 11,343.76/x
  3. Step 3: Cross multiply
    20,904.08x = 28,847.48 × 11,343.76
  4. Step 4: Simplify right side
    20,904.08x = 327,238,889.72
  5. Step 5: Solve for x
    x = 327,238,889.72/20,904.08
  6. Step 6: Final answer
    x = 15,654.31

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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.