Home / 12,748.10-19,126.20-5,725.40

Finding the Fourth Proportional to 12,748.10, 19,126.20 and 5,725.40

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Solution

The fourth proportional to 12,748.10, 19,126.20 and 5,725.40 is: 8,589.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,748.10 : 19,126.20 = 5,725.40 : x
  2. Step 2: Convert to fraction form
    12,748.10/19,126.20 = 5,725.40/x
  3. Step 3: Cross multiply
    12,748.10x = 19,126.20 × 5,725.40
  4. Step 4: Simplify right side
    12,748.10x = 109,505,145.48
  5. Step 5: Solve for x
    x = 109,505,145.48/12,748.10
  6. Step 6: Final answer
    x = 8,589.92

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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.