Home / 21,779.28-32,668.92-6,989.22

Finding the Fourth Proportional to 21,779.28, 32,668.92 and 6,989.22

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Solution

The fourth proportional to 21,779.28, 32,668.92 and 6,989.22 is: 10,483.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,779.28 : 32,668.92 = 6,989.22 : x
  2. Step 2: Convert to fraction form
    21,779.28/32,668.92 = 6,989.22/x
  3. Step 3: Cross multiply
    21,779.28x = 32,668.92 × 6,989.22
  4. Step 4: Simplify right side
    21,779.28x = 228,330,269.04
  5. Step 5: Solve for x
    x = 228,330,269.04/21,779.28
  6. Step 6: Final answer
    x = 10,483.83

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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.