Home / 12,276.09-18,416.61-4,779.27

Finding the Fourth Proportional to 12,276.09, 18,416.61 and 4,779.27

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Solution

The fourth proportional to 12,276.09, 18,416.61 and 4,779.27 is: 7,169.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,276.09 : 18,416.61 = 4,779.27 : x
  2. Step 2: Convert to fraction form
    12,276.09/18,416.61 = 4,779.27/x
  3. Step 3: Cross multiply
    12,276.09x = 18,416.61 × 4,779.27
  4. Step 4: Simplify right side
    12,276.09x = 88,017,951.67
  5. Step 5: Solve for x
    x = 88,017,951.67/12,276.09
  6. Step 6: Final answer
    x = 7,169.87

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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.