Home / 20,582.57-28,405.37-12,519.38

Finding the Fourth Proportional to 20,582.57, 28,405.37 and 12,519.38

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Solution

The fourth proportional to 20,582.57, 28,405.37 and 12,519.38 is: 17,277.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.57 : 28,405.37 = 12,519.38 : x
  2. Step 2: Convert to fraction form
    20,582.57/28,405.37 = 12,519.38/x
  3. Step 3: Cross multiply
    20,582.57x = 28,405.37 × 12,519.38
  4. Step 4: Simplify right side
    20,582.57x = 355,617,416.45
  5. Step 5: Solve for x
    x = 355,617,416.45/20,582.57
  6. Step 6: Final answer
    x = 17,277.60

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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.