Home / 13,259.28-19,888.46-3,398.65

Finding the Fourth Proportional to 13,259.28, 19,888.46 and 3,398.65

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Solution

The fourth proportional to 13,259.28, 19,888.46 and 3,398.65 is: 5,097.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,259.28 : 19,888.46 = 3,398.65 : x
  2. Step 2: Convert to fraction form
    13,259.28/19,888.46 = 3,398.65/x
  3. Step 3: Cross multiply
    13,259.28x = 19,888.46 × 3,398.65
  4. Step 4: Simplify right side
    13,259.28x = 67,593,914.58
  5. Step 5: Solve for x
    x = 67,593,914.58/13,259.28
  6. Step 6: Final answer
    x = 5,097.86

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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.