Home / 19,176-28,731.24-13,601.76

Finding the Fourth Proportional to 19,176, 28,731.24 and 13,601.76

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Solution

The fourth proportional to 19,176, 28,731.24 and 13,601.76 is: 20,379.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,176 : 28,731.24 = 13,601.76 : x
  2. Step 2: Convert to fraction form
    19,176/28,731.24 = 13,601.76/x
  3. Step 3: Cross multiply
    19,176x = 28,731.24 × 13,601.76
  4. Step 4: Simplify right side
    19,176x = 390,795,430.98
  5. Step 5: Solve for x
    x = 390,795,430.98/19,176
  6. Step 6: Final answer
    x = 20,379.40

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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.