Home / 20,144.40-30,220.65-16,880.10

Finding the Fourth Proportional to 20,144.40, 30,220.65 and 16,880.10

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Solution

The fourth proportional to 20,144.40, 30,220.65 and 16,880.10 is: 25,323.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,144.40 : 30,220.65 = 16,880.10 : x
  2. Step 2: Convert to fraction form
    20,144.40/30,220.65 = 16,880.10/x
  3. Step 3: Cross multiply
    20,144.40x = 30,220.65 × 16,880.10
  4. Step 4: Simplify right side
    20,144.40x = 510,127,594.07
  5. Step 5: Solve for x
    x = 510,127,594.07/20,144.40
  6. Step 6: Final answer
    x = 25,323.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.