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Finding the Fourth Proportional to 13,975.92, 20,899.08 and 10,820.16

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Solution

The fourth proportional to 13,975.92, 20,899.08 and 10,820.16 is: 16,180.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,975.92 : 20,899.08 = 10,820.16 : x
  2. Step 2: Convert to fraction form
    13,975.92/20,899.08 = 10,820.16/x
  3. Step 3: Cross multiply
    13,975.92x = 20,899.08 × 10,820.16
  4. Step 4: Simplify right side
    13,975.92x = 226,131,389.45
  5. Step 5: Solve for x
    x = 226,131,389.45/13,975.92
  6. Step 6: Final answer
    x = 16,180.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.