Home / 20,796.98-28,681.16-13,730.54

Finding the Fourth Proportional to 20,796.98, 28,681.16 and 13,730.54

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Solution

The fourth proportional to 20,796.98, 28,681.16 and 13,730.54 is: 18,935.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,796.98 : 28,681.16 = 13,730.54 : x
  2. Step 2: Convert to fraction form
    20,796.98/28,681.16 = 13,730.54/x
  3. Step 3: Cross multiply
    20,796.98x = 28,681.16 × 13,730.54
  4. Step 4: Simplify right side
    20,796.98x = 393,807,602.57
  5. Step 5: Solve for x
    x = 393,807,602.57/20,796.98
  6. Step 6: Final answer
    x = 18,935.81

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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.