Home / 20,730.05-28,578.48-17,530.49

Finding the Fourth Proportional to 20,730.05, 28,578.48 and 17,530.49

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Solution

The fourth proportional to 20,730.05, 28,578.48 and 17,530.49 is: 24,167.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.05 : 28,578.48 = 17,530.49 : x
  2. Step 2: Convert to fraction form
    20,730.05/28,578.48 = 17,530.49/x
  3. Step 3: Cross multiply
    20,730.05x = 28,578.48 × 17,530.49
  4. Step 4: Simplify right side
    20,730.05x = 500,994,757.86
  5. Step 5: Solve for x
    x = 500,994,757.86/20,730.05
  6. Step 6: Final answer
    x = 24,167.56

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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.