Home / 20,674.90-28,489.08-17,102.80

Finding the Fourth Proportional to 20,674.90, 28,489.08 and 17,102.80

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Solution

The fourth proportional to 20,674.90, 28,489.08 and 17,102.80 is: 23,566.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.90 : 28,489.08 = 17,102.80 : x
  2. Step 2: Convert to fraction form
    20,674.90/28,489.08 = 17,102.80/x
  3. Step 3: Cross multiply
    20,674.90x = 28,489.08 × 17,102.80
  4. Step 4: Simplify right side
    20,674.90x = 487,243,037.42
  5. Step 5: Solve for x
    x = 487,243,037.42/20,674.90
  6. Step 6: Final answer
    x = 23,566.89

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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.