Home / 13,615.23-18,782.24-11,820.27

Finding the Fourth Proportional to 13,615.23, 18,782.24 and 11,820.27

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Solution

The fourth proportional to 13,615.23, 18,782.24 and 11,820.27 is: 16,306.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615.23 : 18,782.24 = 11,820.27 : x
  2. Step 2: Convert to fraction form
    13,615.23/18,782.24 = 11,820.27/x
  3. Step 3: Cross multiply
    13,615.23x = 18,782.24 × 11,820.27
  4. Step 4: Simplify right side
    13,615.23x = 222,011,148.00
  5. Step 5: Solve for x
    x = 222,011,148.00/13,615.23
  6. Step 6: Final answer
    x = 16,306.09

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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.