Home / 15,470.44-21,379.62-13,742.44

Finding the Fourth Proportional to 15,470.44, 21,379.62 and 13,742.44

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Solution

The fourth proportional to 15,470.44, 21,379.62 and 13,742.44 is: 18,991.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,470.44 : 21,379.62 = 13,742.44 : x
  2. Step 2: Convert to fraction form
    15,470.44/21,379.62 = 13,742.44/x
  3. Step 3: Cross multiply
    15,470.44x = 21,379.62 × 13,742.44
  4. Step 4: Simplify right side
    15,470.44x = 293,808,145.07
  5. Step 5: Solve for x
    x = 293,808,145.07/15,470.44
  6. Step 6: Final answer
    x = 18,991.58

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1.5x scale

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.