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Finding the Fourth Proportional to 14,779.92, 20,399.78 and 8,495.94

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Solution

The fourth proportional to 14,779.92, 20,399.78 and 8,495.94 is: 11,726.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,779.92 : 20,399.78 = 8,495.94 : x
  2. Step 2: Convert to fraction form
    14,779.92/20,399.78 = 8,495.94/x
  3. Step 3: Cross multiply
    14,779.92x = 20,399.78 × 8,495.94
  4. Step 4: Simplify right side
    14,779.92x = 173,315,306.89
  5. Step 5: Solve for x
    x = 173,315,306.89/14,779.92
  6. Step 6: Final answer
    x = 11,726.40

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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.