Home / 20,845.69-28,744.70-16,808.28

Finding the Fourth Proportional to 20,845.69, 28,744.70 and 16,808.28

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Solution

The fourth proportional to 20,845.69, 28,744.70 and 16,808.28 is: 23,177.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.69 : 28,744.70 = 16,808.28 : x
  2. Step 2: Convert to fraction form
    20,845.69/28,744.70 = 16,808.28/x
  3. Step 3: Cross multiply
    20,845.69x = 28,744.70 × 16,808.28
  4. Step 4: Simplify right side
    20,845.69x = 483,148,774.28
  5. Step 5: Solve for x
    x = 483,148,774.28/20,845.69
  6. Step 6: Final answer
    x = 23,177.40

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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.