Home / 19,309.40-28,914.46-13,377.84

Finding the Fourth Proportional to 19,309.40, 28,914.46 and 13,377.84

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Solution

The fourth proportional to 19,309.40, 28,914.46 and 13,377.84 is: 20,032.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,309.40 : 28,914.46 = 13,377.84 : x
  2. Step 2: Convert to fraction form
    19,309.40/28,914.46 = 13,377.84/x
  3. Step 3: Cross multiply
    19,309.40x = 28,914.46 × 13,377.84
  4. Step 4: Simplify right side
    19,309.40x = 386,812,986.12
  5. Step 5: Solve for x
    x = 386,812,986.12/19,309.40
  6. Step 6: Final answer
    x = 20,032.36

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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.