Home / 10,779.60-16,183.80-8,590.80

Finding the Fourth Proportional to 10,779.60, 16,183.80 and 8,590.80

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Solution

The fourth proportional to 10,779.60, 16,183.80 and 8,590.80 is: 12,897.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,779.60 : 16,183.80 = 8,590.80 : x
  2. Step 2: Convert to fraction form
    10,779.60/16,183.80 = 8,590.80/x
  3. Step 3: Cross multiply
    10,779.60x = 16,183.80 × 8,590.80
  4. Step 4: Simplify right side
    10,779.60x = 139,031,789.04
  5. Step 5: Solve for x
    x = 139,031,789.04/10,779.60
  6. Step 6: Final answer
    x = 12,897.68

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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.