Home / 11,145.20-16,717.80-10,300.40

Finding the Fourth Proportional to 11,145.20, 16,717.80 and 10,300.40

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Solution

The fourth proportional to 11,145.20, 16,717.80 and 10,300.40 is: 15,450.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,145.20 : 16,717.80 = 10,300.40 : x
  2. Step 2: Convert to fraction form
    11,145.20/16,717.80 = 10,300.40/x
  3. Step 3: Cross multiply
    11,145.20x = 16,717.80 × 10,300.40
  4. Step 4: Simplify right side
    11,145.20x = 172,200,027.12
  5. Step 5: Solve for x
    x = 172,200,027.12/11,145.20
  6. Step 6: Final answer
    x = 15,450.60

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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.