Home / 20,668.02-28,521.60-11,236.38

Finding the Fourth Proportional to 20,668.02, 28,521.60 and 11,236.38

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Solution

The fourth proportional to 20,668.02, 28,521.60 and 11,236.38 is: 15,506.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,668.02 : 28,521.60 = 11,236.38 : x
  2. Step 2: Convert to fraction form
    20,668.02/28,521.60 = 11,236.38/x
  3. Step 3: Cross multiply
    20,668.02x = 28,521.60 × 11,236.38
  4. Step 4: Simplify right side
    20,668.02x = 320,479,535.81
  5. Step 5: Solve for x
    x = 320,479,535.81/20,668.02
  6. Step 6: Final answer
    x = 15,506.06

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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.