Home / 20,898.75-28,840.32-11,467.35

Finding the Fourth Proportional to 20,898.75, 28,840.32 and 11,467.35

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Solution

The fourth proportional to 20,898.75, 28,840.32 and 11,467.35 is: 15,824.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898.75 : 28,840.32 = 11,467.35 : x
  2. Step 2: Convert to fraction form
    20,898.75/28,840.32 = 11,467.35/x
  3. Step 3: Cross multiply
    20,898.75x = 28,840.32 × 11,467.35
  4. Step 4: Simplify right side
    20,898.75x = 330,722,043.55
  5. Step 5: Solve for x
    x = 330,722,043.55/20,898.75
  6. Step 6: Final answer
    x = 15,824.97

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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.