Home / 20,730.21-28,578.70-17,530.65

Finding the Fourth Proportional to 20,730.21, 28,578.70 and 17,530.65

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Solution

The fourth proportional to 20,730.21, 28,578.70 and 17,530.65 is: 24,167.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.21 : 28,578.70 = 17,530.65 : x
  2. Step 2: Convert to fraction form
    20,730.21/28,578.70 = 17,530.65/x
  3. Step 3: Cross multiply
    20,730.21x = 28,578.70 × 17,530.65
  4. Step 4: Simplify right side
    20,730.21x = 501,003,187.16
  5. Step 5: Solve for x
    x = 501,003,187.16/20,730.21
  6. Step 6: Final answer
    x = 24,167.79

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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.