Home / 19,145.39-28,723.53-13,885.65

Finding the Fourth Proportional to 19,145.39, 28,723.53 and 13,885.65

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Solution

The fourth proportional to 19,145.39, 28,723.53 and 13,885.65 is: 20,832.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,145.39 : 28,723.53 = 13,885.65 : x
  2. Step 2: Convert to fraction form
    19,145.39/28,723.53 = 13,885.65/x
  3. Step 3: Cross multiply
    19,145.39x = 28,723.53 × 13,885.65
  4. Step 4: Simplify right side
    19,145.39x = 398,844,884.34
  5. Step 5: Solve for x
    x = 398,844,884.34/19,145.39
  6. Step 6: Final answer
    x = 20,832.43

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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.