Home / 20,549.07-28,331.90-16,768.40

Finding the Fourth Proportional to 20,549.07, 28,331.90 and 16,768.40

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Solution

The fourth proportional to 20,549.07, 28,331.90 and 16,768.40 is: 23,119.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,549.07 : 28,331.90 = 16,768.40 : x
  2. Step 2: Convert to fraction form
    20,549.07/28,331.90 = 16,768.40/x
  3. Step 3: Cross multiply
    20,549.07x = 28,331.90 × 16,768.40
  4. Step 4: Simplify right side
    20,549.07x = 475,080,469.34
  5. Step 5: Solve for x
    x = 475,080,469.34/20,549.07
  6. Step 6: Final answer
    x = 23,119.32

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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.