Home / 17,680.20-26,549.10-12,784.20

Finding the Fourth Proportional to 17,680.20, 26,549.10 and 12,784.20

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Solution

The fourth proportional to 17,680.20, 26,549.10 and 12,784.20 is: 19,197.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,680.20 : 26,549.10 = 12,784.20 : x
  2. Step 2: Convert to fraction form
    17,680.20/26,549.10 = 12,784.20/x
  3. Step 3: Cross multiply
    17,680.20x = 26,549.10 × 12,784.20
  4. Step 4: Simplify right side
    17,680.20x = 339,409,004.22
  5. Step 5: Solve for x
    x = 339,409,004.22/17,680.20
  6. Step 6: Final answer
    x = 19,197.12

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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.