Home / 20,898.72-28,841.52-11,468.64

Finding the Fourth Proportional to 20,898.72, 28,841.52 and 11,468.64

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Solution

The fourth proportional to 20,898.72, 28,841.52 and 11,468.64 is: 15,827.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898.72 : 28,841.52 = 11,468.64 : x
  2. Step 2: Convert to fraction form
    20,898.72/28,841.52 = 11,468.64/x
  3. Step 3: Cross multiply
    20,898.72x = 28,841.52 × 11,468.64
  4. Step 4: Simplify right side
    20,898.72x = 330,773,009.93
  5. Step 5: Solve for x
    x = 330,773,009.93/20,898.72
  6. Step 6: Final answer
    x = 15,827.43

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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.