Home / 15,749.80-23,682.30-13,215.40

Finding the Fourth Proportional to 15,749.80, 23,682.30 and 13,215.40

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Solution

The fourth proportional to 15,749.80, 23,682.30 and 13,215.40 is: 19,871.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,749.80 : 23,682.30 = 13,215.40 : x
  2. Step 2: Convert to fraction form
    15,749.80/23,682.30 = 13,215.40/x
  3. Step 3: Cross multiply
    15,749.80x = 23,682.30 × 13,215.40
  4. Step 4: Simplify right side
    15,749.80x = 312,971,067.42
  5. Step 5: Solve for x
    x = 312,971,067.42/15,749.80
  6. Step 6: Final answer
    x = 19,871.43

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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.