Home / 13,134.72-19,559.04-12,989.28

Finding the Fourth Proportional to 13,134.72, 19,559.04 and 12,989.28

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Solution

The fourth proportional to 13,134.72, 19,559.04 and 12,989.28 is: 19,342.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,134.72 : 19,559.04 = 12,989.28 : x
  2. Step 2: Convert to fraction form
    13,134.72/19,559.04 = 12,989.28/x
  3. Step 3: Cross multiply
    13,134.72x = 19,559.04 × 12,989.28
  4. Step 4: Simplify right side
    13,134.72x = 254,057,847.09
  5. Step 5: Solve for x
    x = 254,057,847.09/13,134.72
  6. Step 6: Final answer
    x = 19,342.46

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.