Home / 20,630.36-28,470.48-12,133.10

Finding the Fourth Proportional to 20,630.36, 28,470.48 and 12,133.10

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Solution

The fourth proportional to 20,630.36, 28,470.48 and 12,133.10 is: 16,744.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,630.36 : 28,470.48 = 12,133.10 : x
  2. Step 2: Convert to fraction form
    20,630.36/28,470.48 = 12,133.10/x
  3. Step 3: Cross multiply
    20,630.36x = 28,470.48 × 12,133.10
  4. Step 4: Simplify right side
    20,630.36x = 345,435,180.89
  5. Step 5: Solve for x
    x = 345,435,180.89/20,630.36
  6. Step 6: Final answer
    x = 16,744.02

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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.