Home / 20,632.36-28,473.24-12,135.10

Finding the Fourth Proportional to 20,632.36, 28,473.24 and 12,135.10

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Solution

The fourth proportional to 20,632.36, 28,473.24 and 12,135.10 is: 16,746.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,632.36 : 28,473.24 = 12,135.10 : x
  2. Step 2: Convert to fraction form
    20,632.36/28,473.24 = 12,135.10/x
  3. Step 3: Cross multiply
    20,632.36x = 28,473.24 × 12,135.10
  4. Step 4: Simplify right side
    20,632.36x = 345,525,614.72
  5. Step 5: Solve for x
    x = 345,525,614.72/20,632.36
  6. Step 6: Final answer
    x = 16,746.78

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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.