Home / 13,788.99-20,671.80-6,289.86

Finding the Fourth Proportional to 13,788.99, 20,671.80 and 6,289.86

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Solution

The fourth proportional to 13,788.99, 20,671.80 and 6,289.86 is: 9,429.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,788.99 : 20,671.80 = 6,289.86 : x
  2. Step 2: Convert to fraction form
    13,788.99/20,671.80 = 6,289.86/x
  3. Step 3: Cross multiply
    13,788.99x = 20,671.80 × 6,289.86
  4. Step 4: Simplify right side
    13,788.99x = 130,022,727.95
  5. Step 5: Solve for x
    x = 130,022,727.95/13,788.99
  6. Step 6: Final answer
    x = 9,429.46

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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.