Home / 20,918.72-28,851.84-14,209.52

Finding the Fourth Proportional to 20,918.72, 28,851.84 and 14,209.52

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Solution

The fourth proportional to 20,918.72, 28,851.84 and 14,209.52 is: 19,598.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,918.72 : 28,851.84 = 14,209.52 : x
  2. Step 2: Convert to fraction form
    20,918.72/28,851.84 = 14,209.52/x
  3. Step 3: Cross multiply
    20,918.72x = 28,851.84 × 14,209.52
  4. Step 4: Simplify right side
    20,918.72x = 409,970,797.52
  5. Step 5: Solve for x
    x = 409,970,797.52/20,918.72
  6. Step 6: Final answer
    x = 19,598.27

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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.