Home / 13,124.58-19,686.87-3,889.86

Finding the Fourth Proportional to 13,124.58, 19,686.87 and 3,889.86

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Solution

The fourth proportional to 13,124.58, 19,686.87 and 3,889.86 is: 5,834.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,124.58 : 19,686.87 = 3,889.86 : x
  2. Step 2: Convert to fraction form
    13,124.58/19,686.87 = 3,889.86/x
  3. Step 3: Cross multiply
    13,124.58x = 19,686.87 × 3,889.86
  4. Step 4: Simplify right side
    13,124.58x = 76,579,168.14
  5. Step 5: Solve for x
    x = 76,579,168.14/13,124.58
  6. Step 6: Final answer
    x = 5,834.79

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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.