Home / 20,102.90-30,154.35-16,762.10

Finding the Fourth Proportional to 20,102.90, 30,154.35 and 16,762.10

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Solution

The fourth proportional to 20,102.90, 30,154.35 and 16,762.10 is: 25,143.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102.90 : 30,154.35 = 16,762.10 : x
  2. Step 2: Convert to fraction form
    20,102.90/30,154.35 = 16,762.10/x
  3. Step 3: Cross multiply
    20,102.90x = 30,154.35 × 16,762.10
  4. Step 4: Simplify right side
    20,102.90x = 505,450,230.14
  5. Step 5: Solve for x
    x = 505,450,230.14/20,102.90
  6. Step 6: Final answer
    x = 25,143.15

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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.