Home / 14,779.72-20,398.64-8,811.76

Finding the Fourth Proportional to 14,779.72, 20,398.64 and 8,811.76

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Solution

The fourth proportional to 14,779.72, 20,398.64 and 8,811.76 is: 12,161.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,779.72 : 20,398.64 = 8,811.76 : x
  2. Step 2: Convert to fraction form
    14,779.72/20,398.64 = 8,811.76/x
  3. Step 3: Cross multiply
    14,779.72x = 20,398.64 × 8,811.76
  4. Step 4: Simplify right side
    14,779.72x = 179,747,920.57
  5. Step 5: Solve for x
    x = 179,747,920.57/14,779.72
  6. Step 6: Final answer
    x = 12,161.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.