Home / 20,623.21-28,455.30-11,668.76

Finding the Fourth Proportional to 20,623.21, 28,455.30 and 11,668.76

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Solution

The fourth proportional to 20,623.21, 28,455.30 and 11,668.76 is: 16,100.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,623.21 : 28,455.30 = 11,668.76 : x
  2. Step 2: Convert to fraction form
    20,623.21/28,455.30 = 11,668.76/x
  3. Step 3: Cross multiply
    20,623.21x = 28,455.30 × 11,668.76
  4. Step 4: Simplify right side
    20,623.21x = 332,038,030.86
  5. Step 5: Solve for x
    x = 332,038,030.86/20,623.21
  6. Step 6: Final answer
    x = 16,100.21

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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.