Home / 19,207.79-26,517.21-13,271.42

Finding the Fourth Proportional to 19,207.79, 26,517.21 and 13,271.42

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Solution

The fourth proportional to 19,207.79, 26,517.21 and 13,271.42 is: 18,321.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,207.79 : 26,517.21 = 13,271.42 : x
  2. Step 2: Convert to fraction form
    19,207.79/26,517.21 = 13,271.42/x
  3. Step 3: Cross multiply
    19,207.79x = 26,517.21 × 13,271.42
  4. Step 4: Simplify right side
    19,207.79x = 351,921,031.14
  5. Step 5: Solve for x
    x = 351,921,031.14/19,207.79
  6. Step 6: Final answer
    x = 18,321.79

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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.