Home / 13,185.30-19,729.50-12,472.86

Finding the Fourth Proportional to 13,185.30, 19,729.50 and 12,472.86

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Solution

The fourth proportional to 13,185.30, 19,729.50 and 12,472.86 is: 18,663.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.30 : 19,729.50 = 12,472.86 : x
  2. Step 2: Convert to fraction form
    13,185.30/19,729.50 = 12,472.86/x
  3. Step 3: Cross multiply
    13,185.30x = 19,729.50 × 12,472.86
  4. Step 4: Simplify right side
    13,185.30x = 246,083,291.37
  5. Step 5: Solve for x
    x = 246,083,291.37/13,185.30
  6. Step 6: Final answer
    x = 18,663.46

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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.