Home / 20,582.72-28,405.46-12,623.86

Finding the Fourth Proportional to 20,582.72, 28,405.46 and 12,623.86

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Solution

The fourth proportional to 20,582.72, 28,405.46 and 12,623.86 is: 17,421.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.72 : 28,405.46 = 12,623.86 : x
  2. Step 2: Convert to fraction form
    20,582.72/28,405.46 = 12,623.86/x
  3. Step 3: Cross multiply
    20,582.72x = 28,405.46 × 12,623.86
  4. Step 4: Simplify right side
    20,582.72x = 358,586,550.28
  5. Step 5: Solve for x
    x = 358,586,550.28/20,582.72
  6. Step 6: Final answer
    x = 17,421.73

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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.