Home / 20,550.96-28,358.68-12,592.09

Finding the Fourth Proportional to 20,550.96, 28,358.68 and 12,592.09

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Solution

The fourth proportional to 20,550.96, 28,358.68 and 12,592.09 is: 17,376.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,550.96 : 28,358.68 = 12,592.09 : x
  2. Step 2: Convert to fraction form
    20,550.96/28,358.68 = 12,592.09/x
  3. Step 3: Cross multiply
    20,550.96x = 28,358.68 × 12,592.09
  4. Step 4: Simplify right side
    20,550.96x = 357,095,050.84
  5. Step 5: Solve for x
    x = 357,095,050.84/20,550.96
  6. Step 6: Final answer
    x = 17,376.08

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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.