Home / 19,145.91-28,709.15-8,748.75

Finding the Fourth Proportional to 19,145.91, 28,709.15 and 8,748.75

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Solution

The fourth proportional to 19,145.91, 28,709.15 and 8,748.75 is: 13,118.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,145.91 : 28,709.15 = 8,748.75 : x
  2. Step 2: Convert to fraction form
    19,145.91/28,709.15 = 8,748.75/x
  3. Step 3: Cross multiply
    19,145.91x = 28,709.15 × 8,748.75
  4. Step 4: Simplify right side
    19,145.91x = 251,169,132.32
  5. Step 5: Solve for x
    x = 251,169,132.32/19,145.91
  6. Step 6: Final answer
    x = 13,118.68

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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.