Home / 19,286.40-28,882.88-13,346.64

Finding the Fourth Proportional to 19,286.40, 28,882.88 and 13,346.64

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Solution

The fourth proportional to 19,286.40, 28,882.88 and 13,346.64 is: 19,987.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,286.40 : 28,882.88 = 13,346.64 : x
  2. Step 2: Convert to fraction form
    19,286.40/28,882.88 = 13,346.64/x
  3. Step 3: Cross multiply
    19,286.40x = 28,882.88 × 13,346.64
  4. Step 4: Simplify right side
    19,286.40x = 385,489,384.84
  5. Step 5: Solve for x
    x = 385,489,384.84/19,286.40
  6. Step 6: Final answer
    x = 19,987.63

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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.