Home / 13,811.76-20,718.40-4,451.10

Finding the Fourth Proportional to 13,811.76, 20,718.40 and 4,451.10

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Solution

The fourth proportional to 13,811.76, 20,718.40 and 4,451.10 is: 6,676.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,811.76 : 20,718.40 = 4,451.10 : x
  2. Step 2: Convert to fraction form
    13,811.76/20,718.40 = 4,451.10/x
  3. Step 3: Cross multiply
    13,811.76x = 20,718.40 × 4,451.10
  4. Step 4: Simplify right side
    13,811.76x = 92,219,670.24
  5. Step 5: Solve for x
    x = 92,219,670.24/13,811.76
  6. Step 6: Final answer
    x = 6,676.89

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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.