Home / 21,880.08-30,197.04-12,450.12

Finding the Fourth Proportional to 21,880.08, 30,197.04 and 12,450.12

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Solution

The fourth proportional to 21,880.08, 30,197.04 and 12,450.12 is: 17,182.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,880.08 : 30,197.04 = 12,450.12 : x
  2. Step 2: Convert to fraction form
    21,880.08/30,197.04 = 12,450.12/x
  3. Step 3: Cross multiply
    21,880.08x = 30,197.04 × 12,450.12
  4. Step 4: Simplify right side
    21,880.08x = 375,956,771.64
  5. Step 5: Solve for x
    x = 375,956,771.64/21,880.08
  6. Step 6: Final answer
    x = 17,182.60

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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.