Home / 20,632.86-28,473.77-11,680.34

Finding the Fourth Proportional to 20,632.86, 28,473.77 and 11,680.34

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Solution

The fourth proportional to 20,632.86, 28,473.77 and 11,680.34 is: 16,119.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,632.86 : 28,473.77 = 11,680.34 : x
  2. Step 2: Convert to fraction form
    20,632.86/28,473.77 = 11,680.34/x
  3. Step 3: Cross multiply
    20,632.86x = 28,473.77 × 11,680.34
  4. Step 4: Simplify right side
    20,632.86x = 332,583,201.51
  5. Step 5: Solve for x
    x = 332,583,201.51/20,632.86
  6. Step 6: Final answer
    x = 16,119.10

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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.