Home / 20,334.99-28,060.76-12,376.34

Finding the Fourth Proportional to 20,334.99, 28,060.76 and 12,376.34

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Solution

The fourth proportional to 20,334.99, 28,060.76 and 12,376.34 is: 17,078.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,334.99 : 28,060.76 = 12,376.34 : x
  2. Step 2: Convert to fraction form
    20,334.99/28,060.76 = 12,376.34/x
  3. Step 3: Cross multiply
    20,334.99x = 28,060.76 × 12,376.34
  4. Step 4: Simplify right side
    20,334.99x = 347,289,506.42
  5. Step 5: Solve for x
    x = 347,289,506.42/20,334.99
  6. Step 6: Final answer
    x = 17,078.42

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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.