Home / 13,607.20-20,363.28-11,779.84

Finding the Fourth Proportional to 13,607.20, 20,363.28 and 11,779.84

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Solution

The fourth proportional to 13,607.20, 20,363.28 and 11,779.84 is: 17,628.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,607.20 : 20,363.28 = 11,779.84 : x
  2. Step 2: Convert to fraction form
    13,607.20/20,363.28 = 11,779.84/x
  3. Step 3: Cross multiply
    13,607.20x = 20,363.28 × 11,779.84
  4. Step 4: Simplify right side
    13,607.20x = 239,876,180.28
  5. Step 5: Solve for x
    x = 239,876,180.28/13,607.20
  6. Step 6: Final answer
    x = 17,628.62

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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.