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Finding the Fourth Proportional to 13,798.51, 20,684.80 and 10,980.42

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Solution

The fourth proportional to 13,798.51, 20,684.80 and 10,980.42 is: 16,460.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,798.51 : 20,684.80 = 10,980.42 : x
  2. Step 2: Convert to fraction form
    13,798.51/20,684.80 = 10,980.42/x
  3. Step 3: Cross multiply
    13,798.51x = 20,684.80 × 10,980.42
  4. Step 4: Simplify right side
    13,798.51x = 227,127,791.62
  5. Step 5: Solve for x
    x = 227,127,791.62/13,798.51
  6. Step 6: Final answer
    x = 16,460.31

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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.